Give moral or psychological support, aid, or courage to.
Dutch: ondersteunen, steunen
Establish as valid or genuine:
— Can you back up your claims?.
Make a copy of (a computer file) especially for storage in another place as a security copy.
Become or cause to become obstructed.
Moby thesaurus: act for, advance, affirm, afford support, answer for, appear for, ascend, attest, authenticate, back, back away, back off, backpedal, backtrack, backtrail, backwater, bear, bear out, bear up, bolster ... show more.
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