Silly or contemptible person (5)

I believe the answer is:

twerp

I believe this clue is a double definition.

'silly' is the first definition.
(I've seen this before)

'contemptible person' is the second definition.
(I've seen this before)

(Other definitions for twerp that I've seen before include "Silly person" , "Nincompoop" , "Foolish fellow" , "Despicable person" , "Fool" .)

I've seen this clue in The Telegraph.

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