rival; opponent; revenge; (arch.) spouse
to avenge (somebody) by striking down their killer
to hate the very sight of; to hold a grudge against; to treat like an enemy; to bear constant enmity; to be gunning for; to have it in for
to hit somebody where they least expect it; to take revenge on someone in an unlikely place; to get revenge on someone in a different contest; (lit.) to attack the Edo enemy in Nagasaki