Shirabe
すました顔

済ますすます

Common Godan Transitive
English jmdict
1
Godan verb with 'su' endingtransitive verb to finish;to get it over with;to conclude
７時までに彼女は夕食を済ましてしまっているだろう。
By 7:00 she will have eaten dinner.
2
Godan verb with 'su' endingtransitive verb to settle;to pay back
電話で済まそうと思いました。
I thought I could settle it by phone.
3
Godan verb with 'su' endingtransitive verb to get along (without something);to make do with (without)
often with で
See also: なしで済ます (なしですます)
Other forms 済す 【すます】 (search-only kanji form)

澄ますすます

Common Godan Transitive
English jmdict
1
Godan verb with 'su' endingtransitive verb to clear;to make clear
あの社長秘書はいつも澄ましている。
That president's secretary is always prim.
2
Godan verb with 'su' endingtransitive verb to be unruffled;to look unconcerned;to feign indifference
3
Godan verb with 'su' endingtransitive verb to look demure;to look prim;to put on airs
4
Godan verb with 'su' endingtransitive verb to strain (one's ears);to listen carefully
See also: 耳を澄ます (みみをすます)
Other forms 清ます 【すます】