What is another word for "useful"?

Roget's Thesaurus (1911) lists these synonyms for "useful": accoucheur, accoucheuse, advantage, affect, aftercrop, aftergrowth, aftermath, agency, agree, aid, air, all, along, and, applicability, aptitude, aptness, aright, arrish, assimilate, assistance, behalf, behoof, bend, beneficial, benefit, benign, bent, best, bias, bid, blessing, boon, boot, bracing, calculated, carry, cast, chance, climate.