Wavers (7)

I think it could be either:

falters

dithers

'wavers' is the definition.
(I know this)

This is the entire clue.

(Other definitions for falters that I've seen before include "'Loses confidence, begins to fail (7)'" , "Moves unsteadily, stumbles" , "Stumbles, hesitates" .)

I've seen this clue in The Washington Post, the Evening Standard and The Sun.

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