Looked up to say more about Slough (7)

I believe the answer is:

admired

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

'looked up to' is the definition.
(I've seen this before)

'say more about slough' is the wordplay.
'say more' becomes 'add' (I've seen this before).
'about' is an insertion indicator.
'slough' becomes 'mire' (I am not sure about this - if you are sure you should believe this answer much more).
'add' going around 'mire' is 'ADMIRED'.

Can you help me to learn more?

(Other definitions for admired that I've seen before include "I'd dream (anag.)" , "Cherished" , "Had a high opinion of" , "Popular" , "Esteemed" .)

I've seen this clue in The Independent.

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.