Smug

Smug \'smug\ adj smug.ger; smug.gest [prob. modif. of LG smuck, neat, fr. MLG, fr. smucken to dress, akin to OE smoc smock] (1551) 1 : trim or smart in dress : SPRUCE 2 : scrupulously clean, neat, or correct : TIDY 3 : highly self-satisfied — smug.ly adv — smug.ness n