stand by

verb

1. intr, adverb to be available and ready to act if needed or called upon
2. intr, adverb to be present as an onlooker or without taking any action

   he stood by at the accident

3. intr, preposition to be faithful to

   to stand by one's principles

4. tr, adverb English law (of the Crown) to challenge (a juror) without needing to show cause

noun

1. 1. a person or thing that is ready for use or can be relied on in an emergency
   2. ( as modifier )

      stand-by provisions

2. on stand-by
   in a state of readiness for action or use

adjective

1. (of an airline passenger, fare, or seat) not booked in advance but awaiting or subject to availability

Example Sentences

As her group stood by juggling their parcels, I asked if she had any tips for people doing their own wedding flowers.

From Los Angeles Times

She pledged to stand by our allies, stand up to dictators and ensure that America had the world’s most lethal fighting force.

From Salon

“Slower, slower, smoooooth ….” urged his his trainer, standing by his side.

From Los Angeles Times

She has, however, publicly stood by Trump on controversial stances like his false claim that the 2020 presidential election was stolen.

From BBC

Beijing will not stand by - it will retaliate.

From BBC