たいか
serious error; gross mistake
Noun
彼かれは定年ていねんまで大過たいかなく勤つとめあげた。
He served without any serious errors until he reached retirement age.
幸さいわい大過たいかなく仕事しごとを終おわらせることができた。
Fortunately I was able to finish my work without any serious errors.