Victor entering only possible answer (5)

I believe the answer is:

solve

I'm a little stuck... Click here to teach me more about this clue!

'possible answer' is the definition.
'solve' can be an answer for 'answer' (thesaurus). I am not certain of the 'possible' bit.

'victor entering only' is the wordplay.
'victor' becomes 'V' (phonetic alphabet: alpha, bravo, charlie etc.).
'entering' indicates putting letters inside.
'only' becomes 'sole' (synonyms).
'v' going inside 'sole' is 'SOLVE'.

Can you help me to learn more?

(Other definitions for solve that I've seen before include "Find the answer to this clue, for instance" , "Unravel (a problem)" , "Decipher" , "Get the answers" , "Explain (a mystery)" .)

I've seen this clue in The Telegraph.

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