憎らしい
にくらしい · nikurashii · JLPT N2 · i-adj
hateful
憎い (nikui, hateful) + らしい (-worthy of) = worthy of being hated
Built from 憎い (nikui, hateful) plus the suffix らしい, which marks something as deserving or typical of a quality. So 憎らしい means hateful enough to provoke hatred.