12-Letter Words Starting With O
Here's the list of all the 731 12-Letter Words Starting With O 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) | |
|---|---|
| organization | 1. a group of people who work together 2. an organized structure for arranging or classifying More Definitions → |
| organisation | 1. the persons (or committees or departments etc.) who make up a body for the purpose of administering something 2. a group of people who work together More Definitions → |
| optimization | 1. the act of rendering optimal More Definitions → |
| occupational | 1. of or relating to the activity or business for which you are trained More Definitions → |
| occasionally | 1. sporadically and infrequently More Definitions → |
overwhelming, osteoporosis, optimisation, oceanography, orthopaedics, orchestrated, oscilloscope, orthodontics, obsolescence, outstretched, … More Common Words → | |