All right. I'll take it just in case.I'll take along some aspirin, just in case.
Idiom
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.
just in case
In the event that something does or does not happen. I brought some snacks for us, just in case we get stuck in traffic.Be sure to set two alarms, just in case the first one doesn't go off.
just in case
in the event that (something happens). All right. I'll take it just in case.I'll take along some aspirin, just in case.