Here's what rhymes with naivest.
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theft left deft weft cleft bereft refreshed enmeshed set cent felt sent affect assent sect ascent scent sensed vent fetched vexed fenced vet against effect get next went yet kept let met percent accept event meant perfect spent text debt helped net threat belt bent checked dealt rent slept stepped swept wet accent bet jet lent melt offset sweat tent upset knelt leaped pet sketched wept wrecked adept cassette flexed leapt decked dent fret necked pent smelt spelt direct except attempt correct consent forget reflect select collect commenced descent neglect stretched suspect cement connect elect erect beset crept dissent dwelt invent lament augment dreamt epithet ferment intercept intersect resent reset tempt cadet duet inept infect orient unchecked wrenched subject extent respect expect prevent protect detect indirect intellect intent regret reject cigarette dialect exempt incorrect condensed inspect repent underwent bayonet clenched dispensed drenched perplexed quenched beget deflect inject pipette preset shipwrecked represent contempt architect alphabet entrenched recollect outstretched parapet circumvent quartet redirect silhouette transept president retrospect circumspect clarinet disconnect discontent disrespect