“defend”

To actively support or fight for a cause or person with vigorous advocacy.

“She championed the rights of the displaced workers long before it became fashionable.”

Best for: Works well in journalism, speeches, and persuasive writing where active support is implied.

To clear someone of blame or suspicion by proving their actions justified.

“History would vindicate the general's controversial decision to retreat.”

Best for: Best used in legal, moral, or historical contexts where reputation is at stake.

To serve as a strong barrier or defense against something threatening.

“The old judge had bulwarked civil liberties against decades of political pressure.”

Best for: Powerful in political or literary writing; carries a fortress-like, immovable quality.

To adopt and publicly support a cause, belief, or position with commitment.

“He espoused the theory so fiercely that colleagues stopped challenging him altogether.”

Best for: Ideal for academic or intellectual contexts involving ideas rather than physical defense.

To protect something or someone from harm, criticism, or attack with deliberate force.

“She shielded her source even when the court demanded names.”

Best for: Short and visceral — punchy in journalism, thrillers, or anywhere urgency matters.

To contend stubbornly on behalf of something, especially a minor or contested point.

“He would stickle for his footnotes against any editor bold enough to touch them.”

Best for: Obscure and delightful for literary or satirical contexts involving pedantic defenders.