here: [OE] Like he, here can be traced back ultimately to a prehistoric Indo-European base *ki-, *ko-, which denoted ‘thisness’ or ‘hereness’ (as opposed to ‘thatness’ or ‘thereness’). The adverbial suffix -r (as in there and where) links it to the concept of ‘place’. => there, where[here etymology, here origin, 英语词源]