finalizar
/finaliˈθaɾ/ · B2 · verb
to finalize, finish
🏁 finalizar = final + -izar (to make): to make something final
Spanish -izar means to make or turn into, like English -ize. Take final, add -izar, and you get to make it final. English finalize is almost the same word, so finalizar means to finalize or finish.