it etymology

Middle English word it comes from Proto-Indo-European *ḱoy-, Proto-Indo-European *ki-, Proto-Indo-European *k'ey-, and later Old English hit (It.)

Detailed word origin of it

Descendants of *ḱoy-: a civil eme halloo halow hamely hamme heer henne heonenen her-for here hewe hidir hire hiren hit hither hom homly homstal hoo hyo sche ȝho
Descendants of *ki-: bedaggen befilen beleden benethe beshinen beswiken betechen betellen betynen bewepen bi bi cause bicaren bikerven bithenchen biwenden biwitten blissen ha haile halsien helen helthe holi unhal