Proudly accompanying the ambassador on a date, kept getting excited? (4,4,4,4)
I believe the answer is:
with head held high
'proudly' is the definition.
(with head held high means in a proud way)
'accompanying the ambassador on a date kept getting excited?' is the wordplay.
I cannot quite see how this works, but
'accompanying' could be 'with' (I've seen this before) and 'with' is found within the answer.
'ambassador' could be 'he' (His or Her Excellency) and 'he' is found within the answer.
'a' is present in the answer.
'date' could be 'd' (abbreviation e.g. dob - date of birth) and 'd' is found in the answer.
'kept' could be 'held' (holding is a kind of keeping) and 'held' is found in the answer.
'excited?' could be 'high' (I've seen this in other clues) and 'high' is found in the answer.
No letters remain.
This explanation may well be incorrect...