smooth

[1]	smoothen
[2]	polish , smoothen , shine
[3]	smooth out
[4]	smooth out/away , flatten , even , level , iron , press , mangle , calender
[5]	prepare , lay , pave , ease , ready , clear , open , prime , lubricate , facilitate
[6]	sand , plane , polish , buff , burnish
[7]	smooth over , ameliorate , assuage , allay , calm , gloss over , minimize , mitigate , lessen , soothe , reduce , temper , mollify , smoothen , soften , palliate , appease

adj.

[1]	regular , even , flush , flat , level , plane , unruffled , unbroken , unwrinkled , undisturbed , tranquil , peaceful , calm , serene , glassy
[2]	slick , sleek , shiny , glossy , glassy , mirror-like , uniform , polished , burnished , silky , silken , velvety , satiny
[3]	unobstructed , easy , effortless , free , uncluttered , even , orderly , well-ordered , uneventful , flowing , fluent , unconstrained , uninterrupted
[4]	hairless , bald , bare , naked , clean-shaven , smooth-shaven , depilated , glabrous
[5]	soothing , mellow , pleasant , bland , mild , soft
[6]	suave , politic , suave , slick , slippery , bland , unctuous , silken , silky , glib , urbane , agreeable , winning , plausible , facile , nonchalant , courtly , eloquent , honey-tongued , smooth-spoken , persuasive , oily , slimy , syrupy , (Colloq) (Mainly Brit) smarmy
[7]	sweet , dulcet , pear-shaped , mellow , well-modulated , silver-tongued
[8]	slick , fluent , fluid , scheming , conniving , liquid , crafty , shrewd , cunning , tricky , shifty , sly , foxy , Machiavellian , sophistic(al) , plausible , credible , believable , (Colloq) cagey
[9]	legato
[10]	placid , quiet , still , tranquil , unruffled