Phrasal Verbsphrasal verbjump to other results
back upphrasal verb
- 1to move backward, especially in a vehicle You can back up another two feet or so. I backed the car up to the door.
- 2to stop something from moving or flowing freely, usually by blocking it; to be unable to move or flow freely Traffic was backed up for about two miles because of the accident. Do your drains ever back up? related noun backup (3)
- 1to support someone or something; to say that what someone says, etc. is true I'll back you up if they don't believe you. The writer doesn't back up his opinions with examples.
- 2to provide support for someone or something two doctors backed up by a team of nurses The rebels backed up their demands with threats. related noun backup (1)