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

1.
kalau-kalau, sekiranya
just in case; with a slight possibility
:
•
I brought an umbrella, just on the off chance it rains.
Saya bawa payung, kalau-kalau hujan.
•
She called the restaurant on the off chance they had a cancellation.
Dia menelefon restoran itu kalau-kalau ada pembatalan.