Not more than (4)

I think it could be either:

Which length description are you looking for?:

mere

'not more than' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for mere that I've seen before include "Bare, simple" , "Without additions or modifications" , "Nothing more than is specified - or a poetic lake" , "Lake; Wiltshire town" , "Unimpressive" .)

I've seen this clue in the Newsday, The Wall Street Journal and the Penny Press.

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