rely upon

Count on completely

Rely upon is the slightly more formal variant of rely on, meaning to depend on or trust in something or someone: We rely upon their expertise.

The two forms are interchangeable, though upon appears more often in legal, academic, or ceremonial contexts: The court's decision relies upon established precedent.

Related

confide in · swear by · tried and true · dependability · trust · hinge on · trustworthiness · reckon on · fall back on · look to · faith · rest assured · predictability · presume · reliability · sure thing · crutch · consistency

Opposites
dependence vs. independence

rely uponstand alone

Exist without dependency

fend for oneself · go it alone · stand on one's own two feet · do without · bootstrap

trust vs. distrust

rely upondistrust

Absence of confidence

mistrust · doubt · disbelieve · question · second-guess

engagement vs. disengagement

rely uponabandon

Leave behind permanently

reject · forsake · disregard · ignore · shun

Family

upon, reliable, rely, reliance, unreliable, reliant, relying, relies, relied

Familiarity
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Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G