forgetful Meaning, Definition & Usage

  1. adjective (of memory) deficient in retentiveness or range
    unretentive; short.
    • a short memory
  2. adjective not mindful or attentive
    mindless; unmindful.
    • while thus unmindful of his steps he stumbled"- G.B.Shaw
  3. adjective satellite failing to keep in mind
    oblivious.
    • forgetful of her responsibilities
    • oblivious old age

WordNet

For*get"ful adjective
Definitions
  1. Apt to forget; easily losing remembrance; as, a forgetful man should use helps to strengthen his memory.
  2. Heedless; careless; neglectful; inattentive.
    Be not forgetful to entertain strangers. Heb. xiii. 2.
  3. Causing to forget; inducing oblivion; oblivious. Archaic or Poetic "The forgetful wine." J. Webster.

Webster 1913