Able to do, (plain) vanilla, and ok are all synonyms for adequate. Insufficient, inadequate, and unequal to are these antonyms of adequate. And here are another 58 synonyms for adequate.
Adequate Synonyms
- (plain) vanilla
- OK
- Able to do
- Acceptable
- All right
- Ample
- Apposite
- Appropriate
- Average
- Bog-standard
- Capable
- Commonplace
- Cromulent
- Enough
- Equal to
- Fair-to-middling
- Fair
- Fairly good
- Fit for
- Forgettable
- Good enough for
- Good enough
- Goodish
- Half-pie
- Indifferent
- Mediocre
- Medium
- Middle-of-the-road
- Minimal
- Moderate
- No great shakes
- Not bad
- Nothing to shout about
- Nothing to write home about
- Of
- Okay
- Ordinary
- Passable
- Pretty good
- Qualified for
- Reasonable
- Requisite
- Run-of-the-mill
- Satisfactory
- So-so
- Sufficient for
- Sufficient
- Suitable for
- Suitable
- Suited to
- Tolerable
- Undistinguished
- Unexceptionable
- Unexceptional
- Unremarkable
- Up to
- Up to scratch