INATTENTIVE
inattentive
(adjective) showing a lack of attention or care; “inattentive students”; “an inattentive babysitter”
inattentive, neglectful
(adjective) not showing due care or attention; “inattentive students”; “an inattentive babysitter”; “neglectful parents”
Source: WordNet® 3.1
Etymology
Adjective
inattentive (comparative more inattentive, superlative most inattentive)
Of or pertaining to lack of attention; not paying attention; careless.
Synonyms
• absent-minded
• distracted
• distrait
• unconcentrated
Antonyms
• attentive
• vigilant
Source: Wiktionary
In`at*ten"tive, a. Etym: [Cf. F. inattentif.]
Definition: Not attentive; not fixing the mind on an object; heedless;
careless; negligent; regardless; as, an inattentive spectator or
hearer; an inattentive habit. I. Watts.
Syn.
– Careless; heedless; regardless; thoughtless; negligent; remiss;
inadvertent.
– In`at*ten"tive*ly, adv.
– In`at*ten"tive*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition