Crossword Genius

Four make an appearance in a trial of no importance (7)

Ross

I believe the answer is:

trivial

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

'four make an appearance' is the definition.
I can't judge whether this defines the answer.

'in a trial of no importance' is the wordplay.
'in' means one lot of letters goes inside another.
'of no importance' becomes 'vi' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'trial' enclosing 'vi' is 'TRIVIAL'.

Can you help me to learn more?

(Other definitions for trivial that I've seen before include "Insignificant" , "Frivolous" , "Mundane" , "lacking weight" , "Petty, piffling" .)

I've seen this clue in The Globe and Mail.
Want a hint initially instead of a full solution? Install my app