なめらか
nameraka

na-Adjective

1. smooth (of a surface); glassy; velvety; soft

うみ おだやかに、そしてなめらかに える。
umiwa odayakani soshite namerakani mieru.
The sea looks calm and smooth.
na-Adjective

2. smooth (of an action, proceedings, etc.); fluent (speech); fluid; trouble-free

na-Adjective

3. continuously differentiable

Mathematics
Other forms: