Here's what rhymes with niiiis.
these sees fees knees cheese keys seas seize bees peas teas tease leas lees pease tees wheeze hies pees trees please breeze freeze appease pleas fleas frees frieze unease flees skis sneeze threes tepees sarees sleaze sties disease agrees rupees squeeze lessees chemise mortise honeybees posies sprees screes degrees indices overseas decrees diocese trainees appointees dioceses emphases nominees attendees foresees grandees grantees internees referees retirees conferees oversees palsies trapeze antifreeze chickpeas dungarees invitees matinees nobodies parolees soirees manatees trochees analyses guarantees trustees manganese devotees detainees displease licensees syntheses absentees addressees deportees guaranties legatees returnees amputees draftees escapees argosies chickadees debauchees enlistees inductees jubilees pharisees expertise parentheses appendices interviewees disagrees isosceles consignees franchisees divorcees abductees bumblebees hypotheses scrutinise idiosyncrasies Words that almost rhyme with niiiis
leave peace chief piece teeth cease leaf beef lease naive niece reef sheath thief weave geese wreath fief heath heave leash sheaf lief reeve sheave seethe quiche sheathe wreathe achieve brief release grief breathe grease motif sleeve apiece grieve obese cleave crease fleece massif unleash serif bereave cerise believe increase belief police receive beneath relief conceive perceive relieve deceive decease reprieve undeceive decrease underneath retrieve caprice unbelief bequeath pastiche flyleaf interweave modernise overleaf surcease baksheesh debrief interleave tailpiece prestige masterpiece centerpiece harmonise altarpiece leitmotif mortgagees colonise legalese recognise disbelief disbelieve mantelpiece patronise antagonise aperitif cloverleaf misconceive synchronise revolutionise means needs seems leaves feels leads deals deeds genes reads scenes seeds teams themes beads beams beans hears heels meals wheels feeds leagues seals teens thieves weeds jeans leans marines reeds seams tiers deems heals liens reels seers shears sheaves weaves deans jeers kneels peals heaves keels peels reales reams teems beeves cedes heeds reeves seethes weans wheals wreathes fields dreams ideals machines schemes yields appeals speeds achieves breeds sleeves breathes creeds greens queens shields steels gleams pleads relieves steals steeds bleeds cleans cleaves creams fiends grieves impedes recedes wields fiords repeals steams tweeds anneals beseems endears grebes swedes believes receives reveals streams exceeds regimes intrigues perceives routines screens conceives screams conceals concedes fatigues misdeeds ravines canteens deceives ordeals esteems misleads racemes redeems spleens squeals accedes convenes congeals demeans millipedes misreads reprieves screeds proceeds magazines precedes succeeds submarines vaccines intervenes latrines retrieves sardines purines villeins cuisines limousines overhears smithereens tambourines interweaves nosebleeds stampedes tangerines extremes automobiles figurines buccaneers cornfields evergreens supersedes musketeers supervenes centipedes libertines sunscreens greenhorns puppeteers snowmobiles amphetamines fricatives brigantines philistines pyrimidines bibliophiles disbelieves quarantines battlefields subroutines recitatives