Able to do, (plain) vanilla, and ok are all synonyms for adequate. Insufficient, inadequate, and unequal to are antonyms of adequate. And here are 58 another word for adequate.
(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, and up to scratch are all synonyms for adequate.
Adequate synonym page has a variety of synonyms that differ in length. 2 synonyms with 2 letters and 4 synonyms with 4, 6, and 13 letters. 1 synonym with 5, 14, 19, and 23 letters and 6 synonyms with 7, 10, and 11 letters.
9 synonyms with 8 letters and 3 synonyms with 9, and 15 letters. 5 synonyms with 12 letters. For a total of 56 another word for adequate.
The sun sets very quickly.
She enjoys reading every evening.
He walks to school daily.
The cat sleeps all afternoon.