impervious

not allowing anything through

Roots

im- / in- (not): not or without
per-: through, thoroughly, or completely
via: way, road, path, or course

Other words with the via root

deviate: to depart from a path, rule, or pattern
obviate: to make unnecessary by preventing or removing the need
trivia: small facts or bits of minor information
trivial: of little importance or too minor to matter
via: by way of; through

Impervious means no way through: water, pressure, or persuasion cannot get in.

The old boots were nearly impervious to rain.

Open the AstraWords vocabulary map