Dictionary Only:
Profanity Off:

12-Letter Words Starting O & Ending ON

There are 13 12 letter words, 6 12 letter phrases and 0 12 letter abbr's starting with 'O' and ending with 'ON'.

Best Scoring

Expand?WordSave?LengthUsagePointsType
optimization12
25 nounn
noun

• the act of rendering optimal

organization12
22 nounn
noun

• a group of people who work together

• an organized structure for arranging or classifying

• the persons (or committees or departments etc.) who make up a body for the purpose of administering something

• the act of organizing a business or an activity related to a business

• an ordered manner; orderliness by virtue of being methodical and well organized

• the activity or result of distributing or disposing persons or things properly or methodically

• the act of forming or establishing something

overexertion12
22 nounn
noun

• excessive exertion; so much exertion that discomfort or injury results

overtaxation12
22 nounn
noun

• Excessive taxation

overreaction12
17 verb, nounv, n
noun

• an excessive reaction; a reaction with inappropriate emotional behavior

ossification12
17 nounn
noun

• the developmental process of bone formation

• the calcification of soft tissue into a bonelike material

• the process of becoming rigidly fixed in a conventional pattern of thought or behavior

• hardened conventionality

optimisation12
16 nounn
noun

• the act of rendering optimal

obnubilation12
16 nounn
Valid word for Scrabble US
obliteration12
14 nounn
noun

• destruction by annihilating something

• the complete destruction of every trace of something

organisation12
13 nounn
noun

• the persons (or committees or departments etc.) who make up a body for the purpose of administering something

• a group of people who work together

• an organized structure for arranging or classifying

• an ordered manner; orderliness by virtue of being methodical and well organized

• the act of organizing a business or an activity related to a business

• the activity or result of distributing or disposing persons or things properly or methodically

• the act of forming or establishing something

or scroll down to see all results...
Tip: Scrabble EU allows far more words than US! Also change the max length to see more words.

All 12 Letter Words

WordDB Icon
WordDB
United Kingdom
Download the WordDB app directly on your home screen for instant access. No App Store necessary, less than 1MB storage, always up-to-date and secure.
1.
Tap on share button
2.
Tap on Add To Home Screenadd button
3.
Find WordDB App Icon on your home screen