5 letters · 9 points in Scrabble
verb make slick or smooth
adjective well-groomed and neatly tailored; especially too well-groomed
adjective designed or arranged to offer the least resistant to fluid flow
originA late variant of slick; cognate to German schleichen (Old High German slihhan) and Dutch slijk (“mud, slime”). Compare slink.
Etymology from Wiktionary, CC BY-SA 3.0