| Noun | 1. | inattentiveness - a lack of attentiveness (as to children or helpless people) Synonyms: heedlessness Antonyms: attentiveness, heed, paying attention, regard - paying particular notice (as to children or helpless people); "his attentiveness to her wishes"; "he spends without heed to the consequences" |
| 2. | inattentiveness - the trait of not being considerate and thoughtful of others Antonyms: attentiveness - the trait of being observant and paying attention |