I roared out loud when stared at (9)
I believe the answer is:
eyeballed
'stared at' is the definition.
(I've seen this before)
'i roared out loud' is the wordplay.
'i' becomes 'eye' (I've seen this in other clues).
'roared' becomes 'bawled' (bawling is a kind of roaring).
'out loud' indicates a 'sounds like' (homophone) clue.
'bawled' is a homophone of 'balled'.
'eye'+'balled'='EYEBALLED'
'when' acts as a link.
(Other definitions for eyeballed that I've seen before include "Stared at" , "looked at" , "Watched" , "confronted" .)