Synonym: debilitated, frail, ineffective, infirm, sickly, unhealthy, void, weak, validate. Similar words: valid, validity, invade, in vain, invasion, valiant, canvas, lid. Meaning: ['ɪnvəlɪd] 
n. someone who is incapacitated by a chronic illness or injury. v. 1. force to retire, remove from active duty, as of firemen 2. injure permanently. adj. 1. having no cogency or legal force 2. no longer valid.
n. someone who is incapacitated by a chronic illness or injury. v. 1. force to retire, remove from active duty, as of firemen 2. injure permanently. adj. 1. having no cogency or legal force 2. no longer valid. 
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31. The invalid brought back all he had eaten.
32. He had to look after his invalid brother.
33. The guarantee may be rendered invalid if the manufacturer's instructions are not followed.
34. An error code will be displayed if any invalid information has been entered.
35. At best Nella would be an invalid; at worst she would die.
36. It's an invalid cheque.
37. She is constantly at the beck and call of her invalid father.
38. We think that those arguments are rendered invalid by the hard facts on the ground.
39. The disease changed him from an athlete to an invalid.
40. Filename in invalid format.
41. Dr. Smith looked in on the invalid the day before yesterday.
42. She had been a delicate child and her parents had treated her as an invalid.
43. This passport is invalid. Look at the expiry date.
44. Invalid care allowance For full details see leaflet NI212.
45. My father's an invalid[sentencedict.com], and needs constant care.
46. The current rate of invalid care allowance is ￡26.20.
47. She is an invalid, and children are living abroad.
48. Error 58: Invalid file name.
49. I'm afraid your ticket is invalid on this route.
50. The vote was declared invalid because of a technicality.
51. Ackerman said the argument was invalid.
52. The survey attempted to answer critics who have dismissed international comparisons as invalid because of differences in cultural expectations about health care.
53. As resources allow, we will improve and extend invalid care allowance.
53. Sentencedict.com try its best to gather and create good sentences.
54. As it turns out, the fears that govern such organizations derive in large part from invalid or negative core beliefs.
55. Taken to its logical extent, this point implies that even such indirect tests as those previously described are invalid.
56. Invalid Descriptive Beliefr Valid descriptive beliefs are easily and readily identified.
57. The doctrine of political neutrality is a doctrine of restraint for it advocates neutrality between valid and invalid ideals of the good.
58. Traditionally, as a refuge for his invalid son, who had just suffered his first attack of epilepsy.
59. If the information entered into any field is invalid, an error message will be displayed at the foot of the page.
60. Annabel saw herself in the role of getting ready to welcome the invalid home.