1. back_up - verb
· give moral or psychological support, aid, or courage to; "She supported him during the illness"; "Her children always backed her up"
Synonym(s): support
2. back_up - verb
· move backwards from a certain position; "The bully had to back down"
Synonym(s): back_off, back_down
Hypernym(s): withdraw, retreat, pull_away, draw_back, recede, pull_back, retire, move_back
3. back_up - verb
· establish as valid or genuine; "Can you back up your claims?"
Synonym(s): back
Hypernym(s): confirm, corroborate, sustain, substantiate, support, affirm
4. back_up - verb
· make a copy of (a computer file) especially for storage in another place as a security copy; "You'd better back up these files!"
5. back_up - verb
· become or cause to become obstructed; "The leaves clog our drains in the Fall"; "The water pipe is backed up"
Synonym(s): clog, choke_off, clog_up, congest, choke, foul
Hypernym(s): obstruct, obturate, impede, occlude, jam, block, close_up
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