Expression one sees right through adolescence say (6)
I believe the answer is:
phrase
This clue might be a double definition.
'expression' is the first definition.
(I know that phrase is a type of expression)
'right through adolescence say' is the second definition.
'phrase' can be an answer for 'say' (thesaurus). I'm not sure about the 'right through adolescence' bit.
'one sees' acts as a link.
Can you help me to learn more?
(Other definitions for phrase that I've seen before include "Group of words within a sentence" , "Sherpa (anag)" , "Seraph (anag.)" , "Short expression" , "Group of words as unit" .)