Crossword Genius

Sibilant sound (4)

Ross

I believe the answer is:

hiss

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sibilant sound</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(Other definitions for hiss that I've seen before include "Urgent whisper" , "Show disapproval" , "Make sibilant sound of disapproval as at villain" , "showing contempt?" , "(Make noise to) express disapproval" .)

I've seen this clue in The Times and The Guardian.
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