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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241. Finding a way through the legislation is impossible without expert advice.
242. It's impossible to forget such horrific events - they linger in the memory forever.
243. I had to leave the job because my boss was impossible.
244. This job would be impossible without the aid of a computer.
245. We found it impossible to acclimatize ourselves to the new working conditions.
246. A pilot episode of Nothing's Impossible has already been filmed.
247. It was a question that Roy not unnaturally found impossible to answer.
248. It's impossible to put a price on such a rare painting.
249. It is impossible to say with any accuracy how many are affected.
250. It was impossible for her to fade quietly into the background.
251. Rawlins stresses that it is impossible to prove a causal link between the drug and the deaths.
252. The cost of the flood damage is impossible to quantify.
253. Though the shoreline could be dimly seen, it was impossible to judge how far away it was.
254. It is impossible to predict what the eventual outcome of global warming will be.
255. She talks so much that it's impossible to get a word in.
256. It was impossible to second-guess the decision of the jury.
257. She was such a contrary child-it was impossible to please her.
258. I find it's almost impossible to hold a sensible conversation with her.
259. The two sisters are so similar that it's almost impossible to tell one from the other.
260. The programme sets out to explode the myth that some delicate tropical fish are impossible to keep.
261. The ground was frozen hard and was impossible to dig.
262. For him to forfeit his favourite hobby would be impossible.
263. I knew I had presented her with an impossible task.
264. It is impossible to isolate political responsibility from moral responsibility.
265. The judges found it impossible to separate the two contestants .
266. The result is impossible to predict with any degree of certainty .
267. It was all but impossible to climb back into the boat.
268. It is impossible to hypnotise someone simply by saying a particular word or phrase.
269. It seems impossible to settle these disputes left over by history.
270. It is almost impossible to visit Florida without falling in love with the state.
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.