Followup rhymes with:
backup, blowup, breakup, buildup, burnup, buttercup, canup, checkup, cleanup, close-up, coverup, crudup, eggcup, greenup, grownup, hangup, holdup, hookup, jessup, letup, lineup, linkup, lockup, makeup, markup, northup, pickup, pileup, printup, push-up, pushup, roundup, runup, setup, shakeup, speedup, stalcup, stallcup, standup, start-up, startup, teacup, tuneup, wakeup, walkup, warmup, windup, wisecup
Followup sounds like:
falb, falbo, falloff, falvey, falvo, felipe, filby, filip, filipa, filippi, filippo, fillip, flab, flabby, flahive, flap, flavia, flavio, flip, flippo, flop, floppy, fluff, fluffy, flyby, fullilove, fulop, fulp, fulvia