Supposition (6)

I think it could be either:

Which length description are you looking for?:

theory

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

This is the entire clue.

(Other definitions for theory that I've seen before include "General principles of a subject" , "Series of ideas seeking to explain something" , "can provide an explanation" , "Conjectural view" , "Explanatory idea" .)

I've seen this clue in The Guardian, the Evening Standard, the Wall Street Journal, The Telegraph, The Sun and The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.