Crossword Genius

Undecided, to be frank (4)

Ross

I believe the answer is:

open

I believe this clue is a double definition.

'undecided' is the first definition.
('open' can be a synonym of 'undecided')

'frank' is the second definition.
('open' can be a synonym of 'frank')

'to be' is the link.

(Other definitions for open that I've seen before include "Agape" , "Frank; not closed" , "Traditional room heater" , "Liberal" , "Not secret or hidden" .)

I've seen this clue in the Evening Standard.
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