ab·sent·mind·ed 
/ˌæbsəntˈmaɪndəd/ adjective
/ˌæbsəntˈmaɪndəd/ adjective : tending to forget things or to not notice things : having or showing a lack of attention
▪ Her absentminded husband forgot their anniversary. ▪ She did the chores in an absentminded way.
▪ Her absentminded husband forgot their anniversary. ▪ She did the chores in an absentminded way.
— ab·sent·mind·ed·ly adverb
▪ Her husband absentmindedly forgot their anniversary.
▪ Her husband absentmindedly forgot their anniversary.
— ab·sent·mind·ed·ness noun [noncount]
▪ She mislaid her keys in a fit of absentmindedness. [=absence of mind]
▪ She mislaid her keys in a fit of absentmindedness. [=absence of mind]
