warner
noun/ˈwɔː(ɹ)nə(ɹ)/
Etymology From warn + -er.
1
One who warns.
- And We had certainly sent Noah to his people, [saying], "Indeed, I am to you a clear warner"1997, Umm Muhammad (Emily Assami), Mary Kennedy, Amatullah Bantley, transl., The Qur'an (Saheeh International), Abul Qasim Publishing House, surah 11, verse 25: