Here's what rhymes with perspicaciously.
graciously tenaciously audaciously efficaciously ungraciously vivaciously fallaciously flirtatiously spaciously salaciously capaciously ostentatiously voraciously pertinaciously vexatiously loquaciously mendaciously disputatiously Words that almost rhyme with perspicaciously
racially courageously famously capably facially glacially heinously cagily palatially patiently fatally gaiety papacy gainfully shamelessly painlessly nakedly shakily weightily ashamedly faithlessly gracelessly weightlessly namelessly shapelessly shadily hastily painfully vacancy gratefully laity latency belatedly daintily outrageously shamefully crazily matronly balefully fatefully hazily insatiably nasally blamelessly cravenly hatefully unshakably contagiously elatedly tastelessly tastily unshakeably changeably racily wakefully brainlessly incapably faithfully gracefully impatiently spatially advantageously playfully blatantly tastefully vagrancy adjacency brazenly unashamedly prenatally ungratefully wastefully adjacently blatancy throatily masonry mistakenly interchangeably disdainfully inescapably interagency tetralogy flagrantly disadvantageously ungracefully flagrancy fragrantly unfaithfully salacity unmistakably disgracefully distastefully complacency complacently computationally organizationally freemasonry organisationally calculatedly complaisantly