irretentive

irretentive

(ˌɪrɪˈtɛntɪv) adjnot retentive ˌirreˈtentiveness n

ir•re•ten•tive

(ˌɪr ɪˈtɛn tɪv)

adj. not retentive; lacking power to retain, esp. mentally. [1740–50] ir`re•ten′tive•ness, ir`re•ten′tion, n.