<title type="display">impervious</title> Pronúncia: ɪmˈpɜːvɪəs adjective impenetrable, impermeable (to a). figurative insensible (to a).
<title type="display">impetus</title> Pronúncia: ˈɪmpɪtəs [pl.: impetes] noun ímpetu. figurative incentiu. impuls.