imperfective
imperfective aspect

The tenses of the imperfective aspect are present, imperfect, and future tense.

Verb forms in the imperfective aspect express an action that has (or had) not been completed.

This fusion can occur because the imperfective aspect only exists in the past tense.

In Japanese, the basic verb form is an imperfective aspect.

This distinction is actually one of perfective vs. imperfective aspect.

The imperfective aspect does not present the action as finished, but rather as pending or ongoing.

The imperfective aspect depicts an action that is still going or underway.

The table below is showing 5 verbs both in their perfective and imperfective aspects.

The imperfective aspect may be fused with the past tense, for a form traditionally called the imperfect.

The imperfective aspect was used to describe continuous, durative actions.