Prove you can’t go up by tube to the air terminal (5)
I believe the answer is:
rebut
'prove you can't go' is the definition.
I can't tell whether this definition defines the answer.
'up by tube to the air terminal' is the wordplay.
'up by' says the letters should be written backwards.
'to' says to put letters next to each other (I've seen this in other clues).
'terminal' says to take the final letters (terminal refers to the end).
The last letter of 'air' is 'r'.
'tube' in reverse letter order is 'ebut'.
'ebut' put after 'r' is 'REBUT'.
Can you help me to learn more?
(Other definitions for rebut that I've seen before include "Disprove an accusation" , "Repel" , "Brute can refute" , "Drive back" , "Prove the claim wrong" .)