Definition of Dwindling:

waste away; taper off

Synonyms of Dwindling:

decline, abate, ebb, wane, lessen, drop, subside, wither, decrease, sink, fade, fall, decay, diminish, peter out, shrivel, shrink, weaken, bate, drain, taper, pine, contract, close, die down, become smaller, die away, die out, grow less, slack off

Opposite/Antonyms of Dwindling:

save, expand, develop, strengthen, raise, extend, go up, rise, swell, grow, prolong, enlarge, enhance, ascend, increase, improve

Sentence/Example of Dwindling: