C1 noun /ˈnɛm.ə.sɪs/
nemesis
दुश्मन / प्रतिद्वंदी
Meaning
A long-standing rival or an inescapable agent of downfall.
Example
For years, he considered his colleague to be his nemesis.
वर्षों तक, उसने अपने सहकर्मी को अपना दुश्मन माना।