just in case
only if something happens

[TahlilGaran] Dictionary of Contemporary English ▲

just in case
only if something happens.
We keep a lot of food on hand, just in case there's a storm.

Usage notes: often used without any following clause:
Make sure you have extra batteries available, just in case.

[TahlilGaran] English Idioms Dictionary ▲

just in case
if something happens
I plan to take my umbrella just in case it rains today.

[TahlilGaran] English Idioms Dictionary ▲

just in case
adv. phr. For an emergency; in order to be protected.
"Here are my house keys. Sue," Tom said. "I'll be back in two weeks, but you should have them, just in case..." See: IN CASE.

[TahlilGaran] English Idioms Dictionary ▲