Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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Im pa s bl
Word Parts
part of speech: adjective
definition 1: not able to happen, or be done; not possible.
It is impossible to walk across the ocean.
similar words:
absurd, difficult, illogical, inappropriate, unbelievable, unreasonable
definition 2: very difficult; not easy to deal with.
You are impossible!He has gotten himself into an impossible situation.
similar words:
difficult, disagreeable, distasteful, inappropriate, objectionable, offensive, unpleasant, unsuitable
Word Parts  About this feature
The word impossible contains the following parts:
im-2 Latin prefix that means not, without
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The prefix im-2 occurs in Latin loanwords. It is an assimilated form of in-2 used before roots beginning with the letter "m," "p," and "b." See in-2.
poss, pot Latin root that means able; power
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-able, -ible, -ble Latin adjective-forming suffix that means capable of being, doing, or undergoing
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The suffix -able , and its variants, is attached to Latin verb roots or English transitive verbs to form adjectives. (In a small set of cases, -able is attached to a noun, e.g. knowledgeable and marriageable.) For spelling purposes, it is useful to know that -able is more likely to be added to a whole English word (comparable, adorable ), while -ible is more likely to follow a bound root (visible , legible ). However,there are still many words which combine a root with -able (capable , inevitable ). The suffix -ity can be added to any adjective ending in -able , -ible , -ble to produce a corresponding noun ending in -ability, -ibility, -bility (possible + -ity > possibility; irrevocable + -ity > irrevocability.)