imperfective

adjective
im·per·fec·tive | \ˌim-pər-ˈfek-tiv \

Definition of imperfective 

of a verb form or aspect

: expressing action as incomplete or without reference to completion or as reiterated — compare perfective

Other Words from imperfective

imperfective noun

First Known Use of imperfective

1887, in the meaning defined above

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The first known use of imperfective was in 1887

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