defective
adj. 有缺陷的；[语]不完全变化的
n. 有缺陷的人
副词：defectively 名词：defectiveness
近义词：faulty，imperfect，flawed，outoforder，substandard，malfunctioning，incomplete，ontheblink，unreliable，wanting，lacking，irregular，poor，deficient，marred，impaired，deformed，weak，unsound，inoperative，feeble-minded，simple，mentally，half-witted，imbecilic，retarded，moronic，fallible，cracked，outofcommission，of，disrepair，out，in，commission，bad，
英英释义
Adjective
- having a defect;
"I returned the appliance because it was defective"
- markedly subnormal in structure or function or intelligence or behavior;
"defective speech"
- not working properly;
"a bad telephone connection" "a defective appliance"
例句
用作形容词(adj.)
- He is mentally defective.他智力不健全。
- She has a defective utterance.她发音有缺陷。
- Please return defective merchandise in three days.请于三日内退还缺陷的商品。
- "Ought" is a defective verb."ought"是变化不完全的动词。
用作名词(n.)
- We decided to make all the defective sheet up.我们决定全部重印有缺陷的页码。
- Evidence is accumulating that a defective gene may be responsible for this disease.越来越多的证据表明该疾病是由一种有缺陷的基因引起的。