impertior
impeto
im·per·vi·us
unpassable
Similar to impervius
impertior
–
to bestow
imperterritus
–
undaunted
imperceptus
–
unknown, unperceived
impius
–
irreverent, ungodly, unpatriotic, wicked, without respect
impirius
–
fiery
devius
–
inconstan
obvius
–
accessible, in the way, on the way, open