When trust is shaken, support is needed (5)

I believe the answer is:

strut

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

'shaken support is needed' is the definition.
I can't judge whether this defines the answer.

'when trust' is the wordplay.
'trust' can be anagrammed to 'STRUT'.
Though, I'm not sure how the anagram is indicated.

'is' is the link.

Can you help me to learn more?

(Other definitions for strut that I've seen before include "Walk in pompous self-satisfied way" , "Reinforcing rod" , "Brace - affected gait" , "Walk pompously" , "Vain walk" .)

I've seen this clue in the Evening Standard.

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.