Antonyms for decline
downward change in value, position:perfection.
lessening:improvement, ascent, betterment, accomplishment, upgrade, progress, success, increase, development, growth, rise, strength, achievement, strengthening.
noun:lean, accumulation, hill, headway, extension, prime, invigoration, pitch, upswing, aggravate, blossoming, flourishing, enlargement, uprise, uptrend, enhance, Rejuvenescence, uptick, revive, continuation, enlarge, exaltation, revitalization, strengthening, rake, tilt, continue, renewal, amplify, Glacis, foment, aggrandizement, uphill, restoration, upturn, heightening, rejuvenation, rage, magnify, heyday, flowering, up.
lessen, become less:extend, laud, enhance, advance, raise, strengthen, build, enlarge, flourish, praise, develop, compliment, reach, win, grow, expand.
say no:go up, continue, accept, grant, improve, use, allow, indulge, ascend, say yes, approve, agree, sanction, want, go along.
Usage examples for decline
18. How do you decline the pronoun Myself? – The Grammar of English Grammars by Goold Brown