Crossword Genius

Witness attending trial (6)

Ross

I believe the answer is:

attest

'witness' is the definition.
(thesaurus)

'attending trial' is the wordplay.
'attending' becomes 'at' (I've seen this in other clues).
'trial' becomes 'test' ('test' can be a synonym of 'trial').
'at'+'test'='ATTEST'

(Other definitions for attest that I've seen before include "Sign on" , "Vouch for" , "say, in court" , "Bear witness, declare to be true" , "Offer evidence" .)

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