Crossword Genius

Sign of approval (6,2)

Ross

I believe the answer is:

thumbs up

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sign of approval</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 thumbs up that I've seen before include "okay" , "gets green light, perhaps" , "Approving gesture" , "successfully received" , "Manual sign of approval" .)

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