In a curious way, is only being funny (6)

I believe the answer is:

nosily

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

'in a curious way' is the definition.
I can't judge whether this defines the answer.

'is only being funny' is the wordplay.
'being funny' is an anagram indicator.
'is'+'only'='isonly'
'isonly' anagrammed gives 'NOSILY'.

Can you help me to learn more?

(Other definitions for nosily that I've seen before include "Over-curiously" , "intruder's way" , "using techniques to pry" , "In a prying manner" , "curiously" .)

I've seen this clue in The Irish Times.

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