Crossword Genius

"Large”, eg when describing deficits or chasms (7)

Ross

I believe the answer is:

yawning

(Other definitions for yawning that I've seen before include "Gaping wide open" , "Wide open (as chasm)" , "Not apparently interested" , "Cavernous" , "Displaying tiredness" .)

I've seen this clue in The Times.
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