Synonym: incapable, incompetent, unfit, unqualified. Antonym: able. Similar words: enable, sustainable, able, cable, table, be able to, tableau, variable. Meaning: [ʌnˈeɪb(ə)l] 
adj. 1. (usually followed by `to') not having the necessary means or skill or know-how 2. (usually followed by `to') lacking necessary physical or mental ability 3. lacking in power or forcefulness.
adj. 1. (usually followed by `to') not having the necessary means or skill or know-how 2. (usually followed by `to') lacking necessary physical or mental ability 3. lacking in power or forcefulness. 
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31. Caught in the poverty trap, they are unable to save money for business ventures.
32. She was unable, or unwilling, to give me any further details.
33. The President was unable to act because the Democrats were boxing him in.
34. Unable to defeat him by logical discussion, she fell back on her old habit of criticizing his speech.
35. He changed his mind about moving, but was unable to buy the house back.
36. They were unwilling, or unable, to guarantee safe passage from the city to the aircraft.
37. Hippos are unable to submerge in the few remaining water holes.
38. "Well, I have shown you how to do this before, " she said, unable to disguise her impatience.
39. She was unable to hide the scorn in her voice.
40. Love is some kind of encounter, unable to be waited for or prepared for.
41. She was unable to keep up the pretence that she loved him.
42. The two of them seem unable to control their sexual urges.
43. She was unable to hold her own,[sentencedict.com] and she had to quit.
44. Unable to resist the impulse, he glanced at the sea again.
45. If the usual team is unable to come, we shall have to do with other players.
46. They were unable to pay the rent, and were evicted from their home.
47. The ice blocks up the river,(www.Sentencedict.com) making the upstream water unable to flow.
48. The computer program was unable to discriminate between letters and numbers.
49. They have been unable to settle/resolve the dispute over working conditions.
50. Even with efficient budgeting, most students are unable to live on ￡4,000 per year.
51. She seems unable to pull herself out of this deep slough of self-pity.
52. Many children are so unfit they are unable to do even basic exercises.
53. Mrs Spratt regrets that she is unable to attend owing to a previous engagement.
54. My father was unable to talk about the war, it was so frightful.
55. The manager was unable to attend but sent his deputy as a substitute.
56. He advanced funds of his own to his company, which was unable to repay him.
57. One of our students was unable to propel her wheelchair up the ramp.
58. I was unable to attend because of a previous engagement.
59. She was unable to make a positive identification of the suspect.
60. The Party has been unable to attract upwardly mobile voters.
More similar words: enable, sustainable, able, cable, table, be able to, tableau, variable, bearable, suitable, reliable, vegetable, disabled, available, comparable, favorable, agreeable, on the table, inevitable, acceptable, changeable, vulnerable, tablespoon, remarkable, uncomfortable, be available, unchangeable, considerable, fortunately, complain about.