Crossword Genius

Look dance up (4)

Ross

I believe the answer is:

leer

'look' is the definition.
(I know that leer is a type of look)

'dance up' is the wordplay.
'dance' becomes 'reel' (reel is a kind of dance).
'up' is a reversal indicator (in down clue: letters go upwards).
'reel' back-to-front is 'LEER'.

(Other definitions for leer that I've seen before include "Give sly look" , "Gaze lasciviously at" , "Ogle, smirk" , "Give lascivious look" , "Suggestive or sneering look" .)

I've seen this clue in The Telegraph.
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