establish as valid or genuine; "Can you back up your claims?" पर्याय: back,
become or cause to become obstructed; "The leaves clog our drains in the Fall"; "The water pipe is backed up" पर्याय: clog, choke off, clog up, congest, choke, foul,
make a copy of (a computer file) especially for storage in another place as a security copy; "You''d better back up these files!"
move backwards from a certain position; "The bully had to back down" पर्याय: back off, back down,
give moral or psychological support, aid, or courage to; "She supported him during the illness"; "Her children always backed her up" पर्याय: support,
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