backup
noun/ˈbækˌʌp/
Frequency rank: #3,151 of 20,003 in the WORDED list (wordfreq data)
Meaning
An extra copy or support kept in case the original fails.

Example sentence
Saving your important files as backup copies is a smart habit.
Synonyms & related words
More words in ranks 3,101–3,200
- unemploymentThe state of not having a job; the number of people without work.
- unityThe state of being joined together or in agreement as one.
- uselessNot able to be used; serving no purpose.
- advocateA person who publicly supports a cause; to speak in favor of something.
- arca curved path or shape, like part of a circle.
- bitterHaving a sharp, unpleasant taste; full of anger or resentment.
- cleverQuick to understand and learn; intelligent.
- clinicA place where people go to receive medical treatment or advice.
- continuousHappening without stopping or breaks.
- correctlyIn a way that is right or accurate.