| Verb | 1. | sleek - make slick or smooth | |
| Adj. | 1. | sleek - having a smooth, gleaming surface; "glossy auburn hair"; "satiny gardenia petals"; "sleek black fur"; "silken eyelashes"; "silky skin"; "a silklike fabric"; "slick seals and otters"smooth - having a surface free from roughness or bumps or ridges or irregularities; "smooth skin"; "a smooth tabletop"; "smooth fabric"; "a smooth road"; "water as smooth as a mirror" | |
| 2. | sleek - well-groomed and neatly tailored; especially too well-groomed; "sleek figures in expensive clothes"groomed - neat and smart in appearance; well cared for; "the manager was a beautifully groomed young man"; "his horse was always groomed" | |