Comparatively feeble joke crowning current Queen (6)

I believe the answer is:

punier

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'comparatively feeble' is the definition.
(I've seen this before)

'joke crowning current queen' is the wordplay.
'joke' becomes 'pun' (pun is a type of joke).
'crowning current' becomes 'i' (symbol for electric current. I am not sure about the 'crowning' bit.).
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'pun'+'i'+'er'='PUNIER'

Can you help me to learn more?

(Other definitions for punier that I've seen before include "Comparatively feeble" , "Feebler" .)

I've seen this clue in The Telegraph.

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