1. to be temperate in; to refrain; to abstain; to hold back; to restrain oneself from excessive ...
今は控えてください。Please refrain for now.
2. to make notes; to jot down (e.g. phone number)
Verb (1-dan, intransitive)
3. to be in preparation for; to be in waiting for
後ろに合図をすると、控えていた二人がわたしの前に立った。When I signaled behind me, the two who had been waiting stepped in front of me.
4. to be soon; to be in the offing
5. to be in a close relationship (e.g. as a backer, etc.)