Crossword Genius

Plunges (5)

Ross

I think it could be either:

drops

dives

'plunges' is the definition.
('dive' can be a synonym of 'plunge')

This is all the clue.

(Other definitions for dives that I've seen before include "Gets into water" , "Someone loaded" , "Sleazy bars" , "Seedy nightclubs" , "Rich man's" .)

I've seen this clue in the Evening Standard and the Sydney Morning Herald.
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