Crossword Genius

Fixed grimace (6)

Ross

I believe the answer is:

rictus

'fixed grimace' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for rictus that I've seen before include "A gaping grin or grimace" , "Fixed grimace, in horror" , "A fixed gaping grin" , "Gape of open mouth" , "Death grin or sustained gaping" .)

I've seen this clue in The Guardian.
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