Tyrant locking last of opponents in garage (6)

I believe the answer is:

despot

I'm a little stuck... Click here to teach me more about this clue!

'tyrant' is the definition.
(I know that tyrant can be written as despot)

'last of opponents in garage' is the wordplay.
'last of' suggests the final letters.
'in' is an insertion indicator.
'garage' becomes 'depot' (I've seen this before).
The last letter of 'opponents' is 's'.
's' put inside 'depot' is 'DESPOT'.

'locking' is the link.
This may not be correct. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for despot that I've seen before include "Caesar for one" , "Tyrant, oppressor" , "Tyrant, dictator" , "Cruel absolute ruler" , "Autocrat" .)

I've seen this clue in The Guardian.

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.