Main entry: progressive, progressive tense, continuous tense, imperfect, imperfect tense
Definition: a tense of verbs used in describing action that is on-going
Main entry: fallible, frail, imperfect, weak
Definition: wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings
Usage: I'm only a fallible human; frail humanity
Main entry: imperfect
Definition: not perfect; defective or inadequate
Usage: had only an imperfect understanding of his responsibilities; imperfect mortals; drainage here is imperfect