“rely”

To depend entirely on a single critical factor or condition.

“The success of the entire mission hinges on whether the signal holds.”

Best for: Punchy and direct; great for high-stakes writing or tight prose.

To depend on someone or something for support or strength.

“She leaned on her instincts when the data ran dry.”

Best for: Conversational yet vivid; works well in character-driven or personal writing.

To trust or count on something with confident expectation.

“He banked on the tide turning before dawn.”

Best for: Idiomatic and bold; suits informal or journalistic registers.

To place trust or confidence in someone or something.

“She reposed her faith in a system that had never once failed her.”

Best for: Formal and dignified; suits legal, philosophical, or classical writing.

To cling steadfastly to something as a source of support or truth.

“He cleaved to the old traditions when everything else crumbled.”

Best for: Literary and archaic-tinged; excellent for historical fiction or solemn prose.

To calculate or depend on something as a certainty in one's plans.

“The general reckoned upon loyalty that the morning would prove absent.”

Best for: Rare and archaic; lends gravitas to historical or formal literary contexts.