Clear hint one missed (5)

I believe the answer is:

overt

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'clear' is the definition.
(thesaurus)

'hint one missed' is the wordplay.
'hint' suggests taking the first letters (I've seen 'hint of' mean this).
'missed' becomes 'vert' (I can't justify this - if you can you should give a lot more credence to this answer).
The first letter of 'one' is 'o'.
'o'+'vert'='OVERT'

Can you help me to learn more?

(Other definitions for overt that I've seen before include "Obvious, patent" , "Open and unconcealed" , "Openly displayed" , "Not concealed - public" , "Clear" .)

I've seen this clue in The Independent.

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