Crossword Genius

Grave, unsmiling (7)

Ross

I believe the answer is:

austere

(Other definitions for austere that I've seen before include "Without luxury or ornament" , "Severe in appearance" , "Abstemious and grave" , "Bleak" , "'Spartan, simple (7)'" .)

I've seen this clue in the Irish Times (Simplex) and The Irish Times.
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