1. (

• unretentive ,
• forgetful ,
• short

) (of memory) deficient in retentiveness or range; "a short memory" ;

2. (

• unmindful ,
• forgetful ,
• mindless

) not mindful or attentive; "while thus unmindful of his steps he stumbled"- G.B.Shaw ;

3. (

• forgetful ,
• oblivious

) failing to keep in mind; "forgetful of her responsibilities"; "oblivious old age" ;