To Neglect
To Be Idle, To Slack
intransitive verb, ichidan verb
なまける
怠る （おこたる、vt） To Be Negligent, To Neglect, To Shirk, To Be Off One's Guard
怠ける （なまける、vi） To Neglect, To Be Idle, To Slack
怠い （だるい） Sluggish, Feel Heavy, Languid, Dull
Intransitive because you don't care ける