verb/ɑ̃.mɛʁ.de/
to bug, bother, irritate "the shit out of" someone; to bother with; to be bored; used to tell someone to bug off
“Il m'emmerde avec ses gamineries !” — He's a pain with his childish nonsense!
Synonyms: agacer, casser les couilles, casser les pieds, énerver, emmachiner, ennuyer, enquiquiner, faire chier
From en- + merde + -er.