tóxico
/ˈtoɡsiko/ · B2 · adj
toxic
☠️ tóxico sounds like toxic — same Greek root toxikon, from toxon, bow (arrow poison)
Spanish tóxico is nearly identical to English toxic. Both come from Greek toxikon pharmakon, meaning poison for arrows, from toxon, bow. Just say toxic with a Spanish stress on the first syllable: TOK-see-ko.