This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Exhibiting or feeling great or offensive satisfaction with oneself or with one's situation; self-righteously complacent: "the smug look of a toad breakfasting on fat marsh flies” ( William Pearson).

adj. Irritatingly pleased with oneself; self-satisfied.

v. To make smug, or spruce.

adj. Studiously neat or nice, especially in dress; spruce; affectedly precise; smooth and prim.

v. To make smug, or spruce.

Smooth; sleek; neat; trim; spruce; fine: also, affectedly proper; unctuous; especially, affectedly nice in dress; satisfied with one's own appearance; hence, self-satisfied in any respect.

Affectedly or conceitedly smart.

n. One who is affectedly proper and nice; a self-satisfied person.

To make smug or spruce: often with up.

To confiscate summarily, as boys used to confiscate tops, marbles, etc., when the game was played out of season.

To hush up.

n. A smith.

adj. marked by excessive complacency or self-satisfaction

"The same may be said of ‘sconce’, in this sense at least; of ‘nowl’ or ‘noll’, which Wiclif uses; of ‘slops’ for trousers (Marlowe’s _Lucan_); of ‘cocksure’ (Rogers), of ‘smug’, which once meant no more than adorned (“the _smug_ bridegroom”, Shakespeare)."

content    contented   

smugger    smuggest   

smugged    smugging    smugness    smugly   

spruce    tidy    self-satisfied   

Bug    Doug    Lug    Zug    antidrug    bug    chug    debug    drug    dug   

complacent    arrogant    condescend    sardonic    self-satisfied    cocky    contemptuous    supercilious    cynical    disdainful