Denshi Jisho — Online Japanese dictionary

枯淡 こたん elegant simplicity
Na-adjective, Noun, No-adjective 
濃淡 のうたん light and shade; shade (of colour, color)
Common word, Noun 
冷淡 れいたん coolness; indifference
Common word, Na-adjective, Noun 
淡淡 たんたん 1: uninterested; unconcerned; indifferent;
2: plain; light; simple; bland;
3: flowing gently
Taru-adjective, Adverb taking the 'to' particle 
恬淡 てんたん disinterest
Na-adjective, Noun, Adverb taking the 'to' particle 
平淡 へいたん simple; quiet
Na-adjective, Noun 
虚無恬淡 きょむてんたん rising above the trivia of life and remaining calm and selfless
Na-adjective, No-adjective, Taru-adjective, Adverb taking the 'to' particle, Noun, Archaism 
無欲恬淡 むよくてんたん indifferent to worldly gain
Usually written using kanji alone, Na-adjective, No-adjective, Taru-adjective, Adverb taking the 'to' particle, Noun 
閑寂枯淡 かんじゃくこたん aesthetic sense in Japanese art emphasising quiet simplicity and subdued refinement
Noun, Na-adjective, No-adjective 

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