Synonym: absurd, inconceivable, unimaginable, unthinkable. Antonym: possible. Similar words: possible, as soon as possible, possibility, permissible, accessible, inexpressible, impose, visible. Meaning: [ɪm'pɑsəbl /-'pɒs-] 
n. something that cannot be done. adj. 1. not capable of occurring or being accomplished or dealt with 2. totally unlikely 3. used of persons or their behavior.
n. something that cannot be done. adj. 1. not capable of occurring or being accomplished or dealt with 2. totally unlikely 3. used of persons or their behavior. 
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31. It was impossible to sleep because of the noise.
32. It's impossible to wring a donation out of him.
33. Union between the two countries would be impossible.
34. It's impossible for me to be there before 8.00p.m.
35. It is impossible to love and to be wise.
36. It was a seemingly impossible task.
37. There is nothing impossible to him who will try.
38. The minefields make an all-out frontal attack almost impossible.
39. Every noble work is at first impossible.
40. They attempted the almost impossible thing.
41. It was impossible to make assumptions about people's reactions.
42. It is impossible to defend against an all-out attack.
43. It is sometimes impossible to avoid conflict altogether.
44. Without unwritten rules civilized life would be impossible.
45. It was the kind of rumour that it is impossible to refute.
46. "It's very difficult, " I said. "Impossible,[sentencedict.com] " she chimed in.
47. It's impossible for me to give you a definite answer.
48. It's impossible to evaluate these results without knowing more about the research methods employed.
49. It was almost impossible to pinpoint the cause of death.
50. The new minister was faced with a seemingly impossible task.Sentence dictionary
51. It's impossible to prove.
52. First editions of these books are now almost impossible to obtain.
53. Trying to continue with a demanding career and manage a child or two is an impossible juggling act.
54. It is difficult to say what is impossible, for the dream of yesterday, today is the hope, but also can become tomorrow's reality.
55. While priests were denied the right to marry and procreate, he said, their situation would remain impossible.
56. Love is not about running into each other in crowds. Love is an impossible meeting. For example, I am a bird flying in sky, u r a leopard in forest. We just fall in love accidentally.
57. We've tried to anticipate the most likely problems, but it's impossible to be prepared for all eventualities/every eventuality.
58. It is impossible to make plants grow in a desert without irrigation.
59. I find it impossible to make ends meet on my small salary.
60. Progress is impossible without change, and those who cannot change their minds cannot change anything.
More similar words: possible, as soon as possible, possibility, permissible, accessible, inexpressible, impose, visible, feasible, ostensible, comprehensible, be responsible for, sibling, compose, fossil, ostensibly, import, composure, impolite, composition, importune, important, Bible, importantly, foible, of importance, impoverishment, fungible, eligible, horrible.