Tea and chai: one word, two roads
English first knew the word as chaa in the 1590s — also cha, tcha, chia, cia — from Portuguese cha by way of Macao, from Mandarin ch'a. The form that became modern tea is the Online Etymology Dictionary's later line: Dutch thee, from Malay teh, directly from Amoy-dialect t'e.
The same split explains chai. Russian chai, Persian cha, Greek tsai, Arabic shay and Turkish çay all travelled overland from the Mandarin form, while French thé, Spanish te and German Tee follow the Dutch sea route. Etymonline dates English chai to 1908, from the Russian or Arabic word — the same Chinese word arriving by a different road, now used especially of spiced teas.



