Something that is imperfect has faults and is not exactly as you would like it to be.
例句
We live in an imperfect world...我們生活在一個并不完美的世界上。They have a huge selection of perfect, slightly imperfect and discontinued cookers, fridges and so on.他們有大量完好的、略有瑕疵的以及已停產的炊具、冰箱和其他貨品可供選擇。
N-SING
(動詞的)未完成過去式，未完成過去時
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'.
英英詞典釋義
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