Correct spelling for the English word "delater" is [dɪlˈe͡ɪtə], [dɪlˈeɪtə], [d_ɪ_l_ˈeɪ_t_ə] (IPA phonetic alphabet).
The word "delater" has Latin origins. It comes from the Latin word "delator", which means "informer" or "accuser". In ancient Rome, a delator was an individual who informed against or accused others of crimes or treasonous acts. The term later found its way into various Romance languages, including Old French, where it became "delatour", and eventually evolved into the modern form "delater" in English.