Ready before father and embarrassed (8)
I believe the answer is:
prepared
'ready' is the definition.
(similar in meaning)
'before father and embarrassed' is the wordplay.
'before' becomes 'pre' (prefix meaning 'before').
'father' becomes 'pa' (pa can mean dad or father).
'and' says to put letters next to each other.
'embarrassed' becomes 'red' (someone may blush or go red when embarrassed).
'pre'+'pa'+'red'='PREPARED'
(Other definitions for prepared that I've seen before include "Waiting" , "edited" , "Ready for action" , "All set" , "Made or got ready" .)