backup
Translation
backup, reserve, support, reinforcement
Examples
Make a backup of your important files.
Make a backup of your important files.
The police officer called for backup.
The police officer called for backup.
He is the backup quarterback for the team.
He is the backup quarterback for the team.
Grammar Patterns
a backup ((of sth.)) a copy of (sth.) Make a backup of your files.
call for backup to request support The police called for backup.
a backup ((for sb./sth.)) a reserve for (sb./sth.) We need a backup plan.
Similar Words
Synonyms: copy, reserve, support, reinforcement
Etymology
Derived from the phrasal verb 'to back up', meaning to support or move backward.
Memory Tips
Think of something that 'has your back' if the primary option fails. This helps remember its meaning as a reserve or support.