タイ

おこた.る、なま.ける

怠, 台, 厶, 口, 心

neglect, laziness

怠る(おこたる): to be negligent in doing something; to shirk; to be off one's guard
怠慢(たいまん): negligence; procrastination; carelessness
怠い(だるい): sluggish; feel heavy; languid; dull
怠ける(なまける): (1) to be idle; to slacken (2) to neglect (e.g. one's work)