adversary
US /ˈæd.vɚ.ser.i/
UK /ˈæd.vɚ.ser.i/

1.
lawan, musuh
one's opponent in a contest, conflict, or dispute
:
•
He faced his old adversary in the final round.
Dia berhadapan dengan lawan lamanya di pusingan akhir.
•
The two nations have been adversaries for centuries.
Kedua-dua negara telah menjadi musuh selama berabad-abad.