Words Starting With OP

Here's the list of all the 529 Words Starting With OP in the English Language.

The list is arranged by the word lengths. Click on the length below to jump to the relevant section of the page.

Common Words (with Definitions and Examples)
open
1. cause to open or to become open
2. start to operate or function or cause to start operating or functioning
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operating
1. involved in a kind of operation
2. being in effect or operation
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operations
1. financial transactions at a brokerage; having to do with the execution of trades and keeping customer records
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option
1. the right to buy or sell property at an agreed price; the right is purchased and if it is not exercised by a stated date the money is forfeited
2. one of a number of things from which only one can be chosen
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opportunity
1. a possibility due to a favorable combination of circumstances
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operation
1. the state of being in effect or being operative
2. a business especially one run on a large scale
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opinion
1. a personal belief or judgment that is not founded on proof or certainty
2. a message expressing a belief about something; the expression of a belief that is held with confidence but not substantiated by positive knowledge or proof
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optional
1. possible but not necessary; left to personal choice
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opening
1. an open or empty space in or between things
2. a ceremony accompanying the start of some enterprise
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optical
1. of or relating to or involving light or optics
2. relating to or using sight
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operator
1. (mathematics) a symbol or function representing a mathematical operation
2. an agent that operates some apparatus or machine
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opened
1. made open or clear
2. not sealed or having been unsealed
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operate
1. direct or control; projects, businesses, etc.
2. perform as expected when applied
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opera
1. a drama set to music; consists of singing with orchestral accompaniment and an orchestral overture and interludes
2. a building where musical dramas are performed
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operational
1. pertaining to a process or series of actions for achieving a result
2. (military) of or intended for or involved in military operations
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optimization
1. the act of rendering optimal
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opposition
1. the action of opposing something that you disapprove or disagree with
2. the relation between opposed entities
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opposite
1. a word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other
2. a relation of direct opposition
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opt
1. select as an alternative over another
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optimal
1. most desirable possible under a restriction expressed or implied
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opposed
1. being in opposition or having an opponent
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optics
1. the branch of physics that studies the physical properties of light
2. optical properties
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opponent
1. a contestant that you are matched against
2. someone who offers opposition
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optimize
1. make optimal; get the most out of; use best
2. modify to achieve maximum efficiency in storage capacity or time or cost
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optimum
1. most favorable conditions or greatest degree or amount possible under given circumstances
2. most desirable possible under a restriction expressed or implied
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operative
1. a person secretly employed in espionage for a government
2. someone who can be employed as a detective to collect information and assist in criminal investigations
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optic
1. of or relating to or resembling the eye
2. relating to or using sight
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oppose
1. be against; express opposition to
2. fight against or resist strongly
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opposing
1. characterized by active hostility
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opener
1. the first event in a series
2. a person who unfastens or unwraps or opens
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openly
1. in an open way
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optimistic
1. expecting the best
2. expecting the best in this best of all possible worlds
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opal
1. a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones
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optimisation
1. the act of rendering optimal
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opaque
1. not transmitting or reflecting light or radiant energy; impenetrable to sight
2. hard or impossible to understand
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optionally
1. in an optional manner
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opus
1. a musical work that has been created
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openness
1. without obstructions to passage or view
2. characterized by an attitude of ready accessibility (especially about one's actions or purposes); without concealment; not secretive
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oppression
1. the act of subjugating by cruelty
2. the state of being kept down by unjust use of force or authority:
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ophthalmology
1. the branch of medicine concerned with the eye and its diseases
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optimism
1. the optimistic feeling that all is going to turn out well
2. a general disposition to expect the best in all things
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opium
1. an addictive narcotic extracted from seed capsules of the opium poppy
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oppressed
1. burdened psychologically or mentally
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ophthalmic
1. of or relating to ophthalmology
2. of or relating to or resembling the eye
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optima
1. most favorable conditions or greatest degree or amount possible under given circumstances
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opacity
1. the phenomenon of not permitting the passage of electromagnetic radiation
2. incomprehensibility resulting from obscurity of meaning
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optometry
1. the practice of an optometrist
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opportunistic
1. taking immediate advantage, often unethically, of any circumstance of possible benefit
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operand
1. a quantity upon which a mathematical operation is performed
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oppressive
1. weighing heavily on the senses or spirit
2. marked by unjust severity or arbitrary behavior
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optimise
1. make optimal; get the most out of; use best
2. modify to achieve maximum efficiency in storage capacity or time or cost
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optimist
1. a person disposed to take a favorable view of things
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optically
1. in an optical manner
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optimally
1. in an optimal and most desirable way
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operable
1. capable of being treated by surgical operation
2. fit or ready for use or service
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opiate
1. a narcotic drug that contains opium or an opium derivative
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opinionated
1. obstinate in your opinions
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operon
1. a segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene
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operatic
1. of or relating to or characteristic of opera
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optometrist
1. a person skilled in testing for defects of vision in order to prescribe corrective glasses
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opulent
1. ostentatiously rich and superior in quality
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operationally
1. in respect to operation
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optician
1. a worker who makes glasses for remedying defects of vision
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ophthalmologist
1. a medical doctor specializing in the diagnosis and treatment of diseases of the eye
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operetta
1. a short amusing opera
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opportune
1. suitable or at a time that is suitable or advantageous especially for a particular purpose
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opulence
1. wealth as evidenced by sumptuous living
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oppress
1. come down on or keep down by unjust use of one's authority
2. cause to suffer
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opossum
1. small furry Australian arboreal marsupials having long usually prehensile tails
2. nocturnal arboreal marsupial having a naked prehensile tail found from southern North America to northern South America
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operatively
1. in a manner to produce an effect
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opportunism
1. taking advantage of opportunities without regard for the consequences for others
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opalescent
1. having a play of lustrous rainbow colors
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opportunist
1. a person who places expediency above principle
2. taking immediate advantage, often unethically, of any circumstance of possible benefit
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oppressor
1. a person of authority who subjects others to undue pressures
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operant
1. having influence or producing an effect
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opine
1. express one's opinion openly and without fear or hesitation
2. expect, believe, or suppose
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Jump to Words by Length

2-Letter Words Starting With OP

3-Letter Words Starting With OP

4-Letter Words Starting With OP

5-Letter Words Starting With OP

6-Letter Words Starting With OP

7-Letter Words Starting With OP

8-Letter Words Starting With OP

19 more 8-Letter Words Starting With OP →

9-Letter Words Starting With OP

29 more 9-Letter Words Starting With OP →

10-Letter Words Starting With OP

21 more 10-Letter Words Starting With OP →

11-Letter Words Starting With OP

32 more 11-Letter Words Starting With OP →

12-Letter Words Starting With OP

28 more 12-Letter Words Starting With OP →

13-Letter Words Starting With OP

7 more 13-Letter Words Starting With OP →

14-Letter Words Starting With OP

3 more 14-Letter Words Starting With OP →

15-Letter Words Starting With OP

16-Letter Words Starting With OP

17-Letter Words Starting With OP

18-Letter Words Starting With OP