Here's what rhymes with decisively.
divisively incisively Words that almost rhyme with decisively
nicety smilingly delightedly invitingly bitingly enticingly excitingly seismically beguilingly chidingly benightedly strikingly stiflingly abidingly tryingly admiringly obligingly terrifyingly untiringly blindingly confidingly satisfyingly appetizingly appetisingly surprisingly gratifyingly horrifyingly shortsightedly paralysingly paralyzingly patronizingly tantalizingly unsurprisingly enterprisingly absentmindedly