forgetful

Adjective

WordNet 3.0

(of memory) deficient in retentiveness or range“a short memory”Synonyms: unretentive short
not mindful or attentive“while thus unmindful of his steps he stumbled — G.B.Shaw”Synonyms: unmindful mindless
failing to keep in mind“forgetful of her responsibilities”“oblivious old age”Synonyms: oblivious

Forgetful \For*get"ful\, a.

1.Apt to forget; easily losing remembrance; as, a forgetful man should use helps to strengthen his memory. [1913 Webster]

2.Heedless; careless; neglectful; inattentive. [1913 Webster]

Be not forgetful to entertain strangers.— Heb. xiii. 2.[1913 Webster]

3.Causing to forget; inducing oblivion; oblivious. [Archaic or Poetic] "The forgetful wine." --J. Webster. [1913 Webster]