CEDICT
careless and lazy; indolent
Wiktionary
疏怠懒散,不受拘束。《初刻拍桉惊奇.卷一七》:「官府事体烦多,把那奉真香火之敬,渐渐疏懒。」也作「疏嬾」。
重編國語辭典
I admit that I was careless.
Source: Tatoeba