köken: Literally "what in the name of Azazel"? Invoking hell or Satan as an intensifier is common throughout European languages. This usage entered written Hebrew in the 1920s, first through translations of European novels. See the לך לעזאזל entry for more about the usage of Azazel in modern Hebrew.
köken: Non-Sino-Vietnamese reading of Chinese 退 (SV: thối, thoái). For the tonal correspondence, see other post-reconstructed Old Chinese, pre-Middle Chinese loans such as bèn, buôn, chung, cùng, where words with Vietnamese A/bằng tones correspond to Qieyun system tone C/去聲 /去声 (qùshēng). Particularly compare đôi (“pair”), which exhibits the exact same correspondence in the rime as with thôi.
aile: một thôi một hồi, thôi nôi
Thấy tôi không muốn nói, bà ta cũng thôi không hỏi.