In grammar, the imperfect or the imperfect tense of a verb is used to describe continuous situations or repeated actions in the past. Examples are 'I was reading' and 'they were eating'.
英英词典释义
Adverb
1. in an imperfect or faulty way;
"The lobe was imperfectly developed""Miss Bennet would not play at all amiss if she practiced more"- Jane Austen