plural of imperfect subjunctive

A grammatical tense which expresses the past as an action which was still going on at the point in time described, say someone "was ...ing" something, as opposed to the already accomplished counterpart past perfect tense (where the action took place even further in the past)

In an imperfect manner or degree; not fully or completely.

(linguistics) The creation of imperfective verb forms from perfective verb stems.

plural of imperfectivization

(pathology) A hereditary disease characterized by brittle bones that easily fracture.

plural of imperfectionist

Satisfied with imperfection.

Somebody uninterested in perfection.

Fungi which do not fit into traditional taxonomic classifications, because their reproduction has not been observed.