Denshi Jisho — Online Japanese dictionary

猿滑 しび crape myrtle (Lagerstroemia indica)
Noun, Usually written using kana alone 
円滑 えんかつ smooth; undisturbed; uninterrupted; harmonious
Common word, Na-adjective 
円滑 えんこつ smooth; undisturbed; uninterrupted; harmonious
Irregular kana usage, Na-adjective 
砂滑 すなめり black finless porpoise (Neophocaena phocaenoides)
Noun, Usually written using kana alone 
滑滑 ぬめぬめ 1:
2: (Usually written using kana alone) slimy; slippery; (Suru verb) (Usually written using kana alone) to have a sheen
Adverb 
滑滑 ヌメヌメ 1:
2: (Usually written using kana alone) slimy; slippery; (Suru verb) (Usually written using kana alone) to have a sheen
Adverb 
平滑 へいかつ smooth; even; level; flat
Na-adjective, Noun, No-adjective 
猿滑 さるすべり crape myrtle (Lagerstroemia indica)
Noun, Usually written using kana alone 
潤滑 じゅんかつ smoothness; lubrication
Na-adjective, Noun 

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