Meaning trap
back up
support someone
To give help or show that you agree with someone, especially in an argument or difficult situation.
Don't mix these meanings
Same phrase, different job.
To give help or show that you agree with someone, especially in an argument or difficult situation.
Another meaning of 'back up' is 'reverse a vehicle'; compare the examples to keep the meanings separate.
Hear it in context
Notice where the phrase sounds natural.
My friends always back me up when I need help.
In group projects, it's important to back up your teammates so everyone feels confident.
Fix the pattern
One small grammar move makes it sound right.
Not: Thanks for backing up me in there.
Say: Thanks for backing me up in there.
With a pronoun, the object goes in the middle: 'back me up'.
Which sounds natural?
Tap the one a native speaker would say.
'Back someone up' is the everyday verb for supporting them; 'corroborate my version' is formal/legal.
Build natural chunks
Words that usually travel with it.
back someone up
- me
- you up
- the claim
- on this
Don't confuse it
Related
Other meanings and phrases to compare.
- back up (reverse a vehicle) — Another meaning of 'back up' is 'reverse a vehicle'; compare the examples to keep the meanings separate.