back up
definition: to establish as valid or genuine
example: Can you back up your claims?
speech part: verb
synonyms:
back
definition: to become or cause to become obstructed
example: The car crash made the highway back up.
speech part: verb
synonyms:
clog
definition: to make a copy of a computer file, especially for storage in another place as a security copy
example: You'd better back up these files!
speech part: verb
synonyms:
definition: to move backwards from a certain position
example: We should back up and discuss what happened before that.
speech part: verb
definition: to give moral or psychological support, aid, or courage to
example: Go ahead and tell them how you feel; we'll back you up.
speech part: verb
synonyms:
support