1. ready for emergency use
- a standby generator
- a standby crew
Similar word(s): secondary
1. something that can be relied on when needed
Definition categories: man–made, thing
2. an actor able to replace a regular performer when required
Similar word(s): understudy
Sentences with standby as a noun:
- The troops were on standby in case of an attack.
- That recipe is an old standby, and she keeps the ingredients around in case of unexpected guests.