Akademik

standby
I
noun
1. something that can be relied on when needed (Freq. 1)
Derivationally related forms: ↑stand by
Hypernyms: ↑thing
2. an actor able to replace a regular performer when required
Syn: ↑understudy
Derivationally related forms: ↑stand by, ↑understudy (for: ↑understudy)
Hypernyms: ↑actor, ↑histrion, ↑player, ↑thespian, ↑role player
II
adjective
ready for emergency use
-

a standby generator

-

a standby crew

Similar to: ↑secondary

Useful english dictionary. 2012.