Be more significant than unconventional, swapping parts in audition (8)
I believe the answer is:
outweigh
'be more significant than' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for outweigh that I've seen before include "Be greater or more significant than" , "trump?" , "Preponderate" , "Override" , "Be heavier or more significant than" .)