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im‧prac‧ti‧cal

1 not sensible or possible for practical reasons :
The road toll scheme was dismissed as impractical.
James was a foolish man, full of impractical plans.
The road toll scheme was dismissed as impractical.
James was a foolish man, full of impractical plans.2 not good at dealing with ordinary practical matters, such as making or repairing things :
Sandra was hopelessly impractical around the house.
Sandra was hopelessly impractical around the house. —impractically
adverb
adverb —impracticality
noun [uncountable]
the sheer impracticality of collecting DNA from such a large population
noun [uncountable]
the sheer impracticality of collecting DNA from such a large population