rely on is a verb meaning "put trust in with confidence". It carries 2 recorded senses.
put trust in with confidence
“she is someone you can really rely on when times get rough”
“you can rely on his discretion”
be dependent on, as for support or maintenance
“elderly parents often depend on their adult children”
Definitions, synonyms and semantic relations for rely on come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.