What does shark mean?
A shark is a large, mostly marine fish, many species of which are apex predators with powerful jaws and streamlined bodies. The word commonly refers to recognizable species such as the great white, tiger, and hammerhead sharks, but it also covers a diverse group of cartilaginous fish rather than a single animal. In informal figurative use, a “shark” is a person who preys on others through deception, exploitation, or intimidation. As a verb, “to shark” means to cheat or swindle, although this use is less common in contemporary English than the noun. Shark is also central to public discussion about ocean ecosystems, conservation, and encounters between people and marine wildlife.
A large, usually predatory marine fish with a streamlined body, prominent dorsal fin, and generally rough skin.
"The shark breached the surface beside the boat."
In figurative use, informal and usually disparaging: “a shark in the loan business.”
To cheat, swindle, or deal unfairly with someone.
"They sharked him out of his deposit."
Less common in modern English and often perceived as old-fashioned or regional.
The standard plural of the noun.
"Several sharks were tracked near the coast."
Sharks are among the oldest vertebrate lineages on Earth, long predating the rise of flowering plants and the first true trees.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does shark come from?
The English word is generally traced to German Hai, the modern German word for a shark, from which it was borrowed during the early modern period. The precise ultimate origin of the German word is not securely established, so it is best not to assign it further without qualification. The English word has remained in use both for the fish and, by extension, for a predatory person.
How shark is actually used
The noun is standard in scientific, journalistic, and everyday contexts. The figurative sense is informal and usually disparaging. As a verb, “shark” is less common in modern English and may sound old-fashioned or regional.