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English to English verb
| 1 |
give moral or psychological support, aid, or courage to |  | Example: She supported him during the illness Her children always backed her up
source: wordnet30
| 2 |
move backwards from a certain position |  | Example: The bully had to back down
source: wordnet30
| 3 |
establish as valid or genuine |  | Example: Can you back up your claims?
source: wordnet30
| 4 |
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!
source: wordnet30
| 5 |
become or cause to become obstructed |  | Example: The leaves clog our drains in the Fall The water pipe is backed up
source: wordnet30
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