· give moral or psychological support, aid, or courage to; "She supported him during the illness"; "Her children always backed her up"

Synonym(s): support

· 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

· establish as valid or genuine; "Can you back up your claims?"

Synonym(s): back

Hypernym(s): confirm, corroborate, sustain, substantiate, support, affirm

· make a copy of (a computer file) especially for storage in another place as a security copy; "You'd better back up these files!"

Hypernym(s): copy, re-create

· 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