How to pronounce 未用過 in Cantonese (3 out of 4):

係喎未用過
It's a non-used cork.

Cantonese Sentence Breakdown

hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
wo6
a final particle to express surprise
agreement
disagreement
tone of reminder or emphasis
when quoting words said by others
未用過 mei6 jung6 gwo3
never used