Irritable if made to go inside to give evidence (7)
I believe the answer is:
testify
'to give evidence' is the definition.
(I've seen this before)
'irritable if made to go' is the wordplay.
I cannot quite see how this works, but
'if' is within the answer.
'irritable' could be 'testy' (testy can mean irritable or annoyed) and 'testy' is located in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'inside' acts as a link.
Can you help me to learn more?
(Other definitions for testify that I've seen before include "sworn" , "Give evidence in court" , "Bear witness in court" , "take the stand" , "Affirm (on oath)" .)