verb/apoˈʝaɾ/
to lean, to rest, to lie or lay; to support, to get behind (to back a cause, party, etc., mentally or with concrete aid); to support (to keep from falling); to lean, to rest, to be supported; to lean on, to rely on
“Te apoyo.” — I've got your back.
Synonyms: adosar, respaldar, sustentar, sostener
Probably borrowed from Italian appoggiare and adapted to Spanish poyo. First attested in 1496.