impossible

1. 1.

   not capable of occurring or being accomplished or dealt with

   “an impossible dream”

   “an impossible situation”

   Antonymspossible

   Similarhopelessimpracticableoutunachievable
2. 2.

   totally unlikely

   Synonymsinconceivableout of the questionunimaginable

   Similarunthinkable
3. 3.

   (used of persons or their behavior) not acceptable or reasonable

   “impossible behavior”

   Synonymsunacceptable

   Similarintolerable

1. 1.

   something that cannot be done

   “his assignment verged on the impossible”

   Broaderimpossibility

Other forms of impossible

plural

impossibles·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about impossible

What does impossible mean?

impossible means "not capable of occurring or being accomplished or dealt with". That is the primary sense; the word has 4 in total, listed in full on this page.

How many syllables are in impossible?

impossible has 4 syllables: im-pos-si-ble. The stress falls on "pos". In IPA it is /ˌɪmˈpɑsəbəl/.

What is another word for impossible?

Close synonyms include inconceivable, out of the question, unimaginable, unacceptable. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

What is the opposite of impossible?

The recorded antonyms are possible.

Is impossible a common word?

impossible is banded "Core" — among the few thousand words that carry most english. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.

What rhymes with impossible?

1 word rhymes with impossible. Rhymes are matched on the phonemes from the last stressed vowel onward, which is the definition a reader has in their head.