Fibonacci rhymes with:
banacci, banacci, antonacci, banacci, bonacci, canace, farinacci, lupinacci, antonacci, bacci, banacci, bonacci, bracci, canace, caracci, chachi, chatihachi, degrace, depace, farace, faraci, farinacci, gerace, geraci, graci, hibachi, hitachi, karachi, lagace, liberace, lupinacci, maniaci, mariachi, menapace, morace, paci, saatchi, schillaci, starace
Fibonacci sounds like:
famines, famous, fan's, fancies, fancy, fanech, fanech's, fang, fangs, fanguy, fanning, fanning's, fans, fans', fanuc, fanucchi, faunce, fawning, fayanjuu, fein's, femsa, fence, fences, fenech, feng, fennessey, fennessy, fenske, fenwick, fiance, fiancee, fiennes, finance, finances, financo, finanz, finanza, finazzo, finch, finches, finck, fincke, fines, finesse, finex, finian's, finicky, fining, finish, finishes, fink, fink's, finke, finks, finn's, finnick, finning, finnish, finns, finocchio, fins, finunc, foaming, foams, fomon's, fones, fong, fons, fonseca, fonz, fonzie, foong, fumes, fuming, funches, funchess, funck, funes, fung, fung's, fungi, fungus, funk, funke, funks, funky, funniness, funs