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