rely

Verb

rely (third-person singular simple present relies, present participle relying, simple past and past participle relied)

1. (intransitive, with on or upon, formerly also with in) To trust; to have confidence in.
   • I relied on "George" and "Fred"—the autopilot and the flight director—to fly the airplane while I worked my way through […]1993, Flying, volume 120, page 73
   • Cookieless sessions enable you to take advantage of session state without relying on browser cookies.2004, Stephen Walther, ASP.NET unleashed
2. (intransitive, with on or upon) To depend; to be dependent upon.
   • The city relies on the subway system.
   • […] recall that birds that rely more on their legs for foraging tend to rely less on their wings, and vice versa.2018, Michael L. Morrison, Amanda D. Rodewald, Gary Voelker, “Flight and Locomotion”, in Ornithology: Foundation, Analysis, and Application, page 299
3. (intransitive, with on or upon) To be intellectually contingent from; to stem from.
   • Parts I and IV of the Court's opinion, and Part III except insofar as it relies upon legislative history1989, Antonin Scalia, Jett v. Dallas Independent School District
4. (obsolete, transitive) To fasten, fix, attach
   • Therefore [they] must needs relye their faithe upon the sillie Ministers faithlesse fidelitie.
5. (obsolete, transitive) To bring together again; to rally.
   • Petrius, that was a noble knyght, and bolde and hardy, relied his peple a-boute hym,