English Dictionary
Definition back up in British English
back up phrasal verb
phrasal verb
Synonyms and related words
2
to show that an explanation or belief is probably true
3
to make a copy of information on your computer
4
if traffic backs up, or if it is backed up, the vehicles are in a long line and waiting to continue moving
Example
Traffic is backing up on all out-of-town routes.
Synonyms and related words
Example
See if you can back up a bit further.
Synonyms and related words
Example
Back up: didn't you say they had already met?
Synonyms and related words
