Look up to one in weird dream (6)
I believe the answer is:
admire
'look up to' is the definition.
('admire' can be a synonym of 'look up to')
'one in weird dream' is the wordplay.
'one' becomes 'i' (Roman numeral).
'in' means one lot of letters goes inside another.
'weird' indicates anagramming the letters.
'dream' with letters rearranged gives 'admre'.
'i' placed within 'admre' is 'ADMIRE'.
(Other definitions for admire that I've seen before include "put on a pedestal" , "Have respect for, esteem" , "Look at (someone or something) with pleasure" , "Esteem, have high regard for" , "Idolise" .)