Immensely (2,3)

I think it could be either:

Which length description are you looking for?:

2,3

no end

'immensely' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for no end that I've seen before include "Very much (colloq.)" , "Very much (unfinished?)" , "detailed?" , "what eternity offers?" , "Without limit" .)

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