
Open English Wordnet
Verbs
(v)support, back upgive moral or psychological support, aid, or courage to“She supported him during the illness”,
“Her children always backed her up” (v)back, back upestablish as valid or genuine“Can you back up your claims?” (v)back upmake a copy of (a computer file) especially for storage in another place as a security copy“You'd better back up these files!”