Jisho

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Na-adjective (keiyodoshi)
1. smooth (of a surface); glassy; velvety; soft
Na-adjective (keiyodoshi)
2. smooth (of an action, proceedings, etc.); fluent (speech); fluid; trouble-free
Na-adjective (keiyodoshi)
3. continuously differentiableMathematics
Other forms
滑らか 【すべらか】滑か 【なめらか】滑か 【すべらか】
Notes
滑か: Irregular okurigana usage. 滑か: Irregular okurigana usage.

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