invalid

英 [ɪn'vælɪd]美 [ɪn'vælɪd]
  • adj. 无效的；有病的；残废的
  • n. 病人；残废者
  • vt. 使伤残；使退役
  • vi. 变得病弱；因病而奉命退役
CET6 TEM4 IELTS 考研 低频词 常用词汇

助记提示

1、val- "be strong" + -id.
2、含义：strong, effective, having force in law, legally binding, supported by facts or authority.
3、in- "not" + valid.

中文词源

invalid 无效的

in-,不，非，valid,有效的。

英文词源

invalid
invalid: see valid
invalid (adj.1)
"not strong, infirm," 1640s, from Latin invalidus "not strong, infirm, weak, feeble," from in- "not" (see in- (1)) + validus "strong" (see valid). Specific meaning "infirm from sickness, disease, or injury" is from 1640s.
invalid (adj.2)
"of no legal force," 1630s, from special use of Latin invalidus (see invalid (adj.1)).
invalid (n.)
1709, originally of disabled military men, from invalid (adj.1). Invalides is short for French Hôtel des Invalides, home for old and disabled soldiers in the 7th arrondissement of Paris.

双语例句

1. Margaret resides with her invalid mother in a London suburb.
玛格丽特同她病弱的母亲住在伦敦郊区。
来自柯林斯例句
2. At best Nella would be an invalid; at worst she would die.
内拉往好里说会落下残疾，往坏处说可能会生命不保。
来自柯林斯例句
3. The treaty was declared invalid because it had not been ratified.
条约没有得到批准，因此被宣布无效。
来自《权威词典》
4. A passport that is out of date is invalid.
护照过期是无效的.
来自《简明英汉词典》
5. Dr. Smith looked in on the invalid the day before yesterday.
史密斯大夫前天去看望那个病人.
来自《简明英汉词典》