Sleek means smooth, glossy and elegant. Sleek hair, a sleek design, sleek and modern.
Of an animal's coat it means glossy and well-fed, which is the oldest sense. Of a design it means clean-lined and free of clutter, and it is the standard compliment in advertising for cars, phones and kitchens. Of a person it can carry a hint of being too polished — a sleek operator. Note that sleek is a variant of slick, and the two have divided the work between them.
1adjectivesleekSmooth, glossy and elegant.
“The cat's sleek black coat shone in the sunlight.”
synonyms: glossy, streamlined
sleek is a quality of smoothness.
Sleek is a late variant of slick, from a Germanic root about smoothness. Dutch slijk, mud, and German schleichen, to creep, come from the same family.
A late variant of slick; cognate to German schleichen (Old High German slihhan) and Dutch slijk (“mud, slime”). Compare slink.
Etymology from Wiktionary, CC BY-SA
Practised in Sharper Adjectives