What does buy mean?
"Buy" is one of the most fundamental verbs in English, meaning to obtain goods or services in exchange for money. It covers everything from everyday purchases — groceries, clothes, tickets — to major transactions such as houses and businesses. Beyond commerce, the word extends figuratively: one can "buy time" by delaying, or "buy someone's loyalty" by offering incentives, both implying that something intangible has been gained at a price. In informal speech, "buy" can also mean to accept or believe something, as in "I don't buy his excuse," suggesting skepticism about whether an explanation holds up. As a noun, chiefly informal American usage, a "buy" is a purchase regarded as good value, as in "a real buy." The verb is grammatically irregular: its past tense and past participle is "bought." Derived forms include "buyer," "buying," "buyout," and "buyback." Neutral in tone and universally understood across the English-speaking world, "buy" remains indispensable for discussing trade, value, and exchange.
To acquire something in exchange for money; figuratively, to obtain something at a cost, or informally, to accept or believe an idea.
"He bought a used bicycle from a neighbor down the street."
Past tense and past participle: bought.
An act of buying, or (informal) a purchase considered good value for money.
"At half the usual price, those boots were a great buy."
Informal register; more formal alternatives include "purchase."
The plural applies only to the noun sense, referring to multiple purchases or multiple good-value acquisitions.
"The store's weekly buys were featured in its newsletter."
English "buy" may be distantly related to "bough" and "bow" — words about bending — hinting that ancient speakers linked trade with bending, or giving way, toward another person.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of buy
"Buy" descends from Old English "bycgan," meaning to buy or purchase, which traces back to Proto-Germanic roots. It is native Germanic vocabulary rather than a borrowing from Latin or French, which sets it apart from many English trade terms such as "purchase." Some scholars connect it to a broader Germanic root associated with bending, linking it distantly to words like "bough" and "bow." Its Germanic lineage makes "buy" part of the oldest layer of everyday English words.
Related word forms
How buy is actually used
As a verb, "buy" is neutral in register and used in both formal and everyday contexts, though "purchase" is preferred in very formal writing. The informal sense of accepting an idea ("I don't buy it") is conversational. As a noun, "buy" is informal, meaning a worthwhile purchase ("that car was a good buy"). The past tense and past participle is "bought."
Easily confused with buy
"Bye" is a farewell interjection or a sports term for advancing without playing, whereas "buy" means to purchase.
"By" is a preposition meaning near or through the agency of, while "buy" is the act of purchasing.