malamiko

Etymology
From.

Noun

 * 1) enemy, foe
 * (proverb, L. L. Zamenhof, Esperanta proverbaro)
 * 1) adversary, opponent
 * 2) * Jurij Finkel (translator), La afero, al kiu vi servas by Yuri German, Chapter 5,
 * En la sama tempo instruas talenta homo Eŭstakio Ivanoviĉ Bogdanovskij, impona viro kaj malamiko de la instruo de Lister.
 * Teaching at the same time was a talented person [named] Evstafi Ivanovich Bogdanovsky, an imposing man and an opponent of Lister’s teaching.
 * Teaching at the same time was a talented person [named] Evstafi Ivanovich Bogdanovsky, an imposing man and an opponent of Lister’s teaching.