ふかんぜんねんしょう

不完全燃焼

表記・読み：ふかんぜんねんしょう

1. 1

   incomplete combustion; imperfect combustion

   名詞noun or participle which takes the aux. verb suru
2. 2

   being off one's game; not doing one's best; being unable to use all of one's strength; failing to obtain the desired result

   名詞noun or participle which takes the aux. verb suruidiomatic expression