■ adjective impossible in practice to do or carry out.
Derivatives
impracticability noun
impracticably adverb
Usage
Although similar in meaning, ~ and impractical are not used in exactly the same way. Impracticable means ‘impossible to carry out’, as in the proposals would be ~ for most small companies , whereas impractical tends to be used to mean ‘not sensible’, as in impractical high heels .