Sleek
What it means
Meaning 1
Smooth, glossy, and shaped with clean flowing lines.
Reach for it when praising a polished visual or tactile finish
The sleek handrail curved continuously around the stair.
Meaning 2
Efficiently designed with little visible clutter or resistance.
Reach for it when describing a product or process whose refinement also serves function
The sleek booking tool exposes advanced choices only when they are needed.