on the off chance
US /ɑn ðə ɔf tʃæns/
UK /ɑn ðə ɔf tʃæns/

1.
혹시, 만약의 경우에
just in case; with a slight possibility
:
•
I brought an umbrella, just on the off chance it rains.
혹시 비가 올까 봐 우산을 가져왔어.
•
She called the restaurant on the off chance they had a cancellation.
혹시 취소된 자리가 있을까 봐 식당에 전화했어.