Change some contractual terminology (5)

I believe the answer is:

alter

'change' is the definition.
(I know that change can be written as alter)

'some contractual terminology' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'ALTER' can be found hidden inside 'contractual terminology'.

(Other definitions for alter that I've seen before include "shift" , "Change or adjust" , "Change, maybe later" , "Make changes to" , "and 10 Across: Second self" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.