(of hair, fur, or skin) smooth and glossy:he was tall, with sleek, dark hair (of an animal) having smooth, glossy hair or fur:a sleek black cat (of a person) having a wealthy and well-groomed appearance:a sleek and ambitious junior Minister (of an object) having an elegant, streamlined shape or design:his sleek black car slid through the traffic ingratiating; unctuous:she gave Guy a sleek smile to underline her words
make (hair) smooth and glossy:her black hair was sleeked down
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adverb -
noun -
adjective (sleekier, sleekiest)