What does pledge mean?
A pledge is a solemn promise or formal commitment, and the word can also denote the thing offered as security for that promise. “I pledge to finish the report by Friday” uses the term to emphasize a deliberate undertaking; in “a pledge of £20,” it refers to money promised to a cause. The expression “pledge allegiance” extends the idea to a promise of loyalty, often made formally. Because a pledge carries a sense of obligation and possible consequence, it usually feels more binding and ceremonial than an ordinary promise. Noun uses include public or political undertakings, charitable subscriptions, and property given as security. Verb uses include promising support, committing funds, and pledging an asset. Pledge is used in both formal and informal English, but formal public commitments and legal or historical contexts make it especially prominent. The word is especially useful for distinguishing a promise as a moral undertaking from a promise understood merely as an intention: to pledge something is not just to say that one will do it, but to place one’s credibility behind it.
A solemn promise or formal commitment. By extension, it may mean a promised contribution or something valuable given as security for an obligation.
"The organization received pledges of both money and volunteer time."
Formal and public uses often imply moral, political, or institutional commitment.
To make a solemn promise or commitment. It can also mean to promise money or support, bind oneself to a cause or policy, or give something as security for an obligation.
"The company pledged to reduce its carbon emissions."
The construction “pledge oneself to” emphasizes a firm personal commitment.
The regular plural of the noun is “pledges.”
"The campaign collected pledges from several local businesses."
A pledge originally meant both the promise and the valuable thing that backed it up.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does pledge come from?
The word entered Middle English from Old French pledge, which was borrowed from a Frankish Germanic term meaning a promise or security. In early use, a pledge could refer both to the undertaking itself and to property handed over as security for it. The modern sense of promising money or support developed from the broader idea of a binding commitment.
Related word forms
How pledge is actually used
Pledge is common in formal, political, legal, and ceremonial contexts, but it is also used conversationally for emphatic personal commitments. It generally sounds more solemn and binding than promise, while pledging support may refer to money, labor, advocacy, or general approval.
Easily confused with pledge
A promise may be casual or informal, whereas a pledge is usually a deliberate, emphatic commitment that carries a stronger sense of obligation.