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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271. Cooking for forty would be frankly impossible without my new assistant.
272. She knew from bitter experience that it would be impossible to talk it over with Julian.
273. It is nearly impossible to conciliate these two disagreeing parties.
274. It is impossible for a small company to gain on the big one while business is so inactive.
275. It is impossible to calculate what influence he had on her life.
276. It would be physically impossible to carry everything at once.
277. Most of the bodies were badly burned,(http://sentencedict.com/impossible.html) making identification almost impossible.
278. His attitude is making life impossible for the rest of the team.
279. After you've signed the contract, it will be impossible to back out.
280. A few years ago it was virtually impossible to find superior quality coffee in local shops.
281. It is impossible to stop the forward march of progress/time.
282. It's impossible to get everybody together at the same time.
283. Organised junior football was either restricted or logistically impossible to operate.
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.