backup
word
Definition
A backup is a copy kept in case the original is lost, damaged, or deleted, especially with digital files. It can also mean extra help, support, or a person who replaces someone if needed.
Usage & Nuances
Most commonly used for data and technology: 'make a backup', 'backup files', 'backup copy'. In everyday speech, it can also mean extra support: 'call for backup' or 'use a backup plan'. As a modifier before a noun, 'backup' is common ('backup generator'); as a noun for a person, it often means a substitute or second choice.
Example Sentences
I made a backup of my photos yesterday.
basic
This file is a backup, not the original.
basic
The team needs a backup goalkeeper.
basic
Do you have a backup plan if this doesn't work?
natural
We should backup the server before the update.
natural
The police called for backup when the situation got worse.
natural