smooth or glossy, such as hair: sleek, combed-back hair. well-fed or well-groomed: looking sleek and healthy. finely shaped; streamlined: a sleek sports car. smooth in manners, speech, etc.; suave. sleek ly, adv. sleek ness, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2026 sleek1 (slēk), adj ...

sleek, slick, glossy mean having a smooth bright surface or appearance. sleek suggests a smoothness or brightness resulting from attentive grooming or physical conditioning.

1. smooth or glossy, as hair. 2. well-fed or well-groomed. 3. finely contoured; streamlined: a sleek sports car. 4. smooth in manners, speech, etc.; suave.

SLEEK meaning: 1. (especially of hair, clothes, or shapes) smooth, shiny, and lying close to the body, and…. Learn more.

Definition of sleek adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

sleek, adj. & adv. meanings, etymology, pronunciation and more in the Oxford English Dictionary

sleek, adj. & adv. meanings, etymology and more | Oxford English Dictionary

SLEEK definition: smooth or glossy, as hair, an animal, etc. See examples of sleek used in a sentence.

To make smooth and glossy on the surface: as, to sleek or slick the hair. Technically— In currying and leather-dressing, to smooth the surface of (leather) by rubbing with an implement called a slicker.