IMPERVIOUS
ADJECTIVES
► IMPERVIAL impervious; impenetrable → 1618 obs.
► OBTURATE stopped up, obstructed; fig. impervious → c1560 obs.
ADJECTIVES
► IMPERVIAL impervious; impenetrable → 1618 obs.
► OBTURATE stopped up, obstructed; fig. impervious → c1560 obs.