The latin root fect appeared in a lot of frequently used English words like affect, infect, etc ... which means to do, to make, to feign. The present active infinitive of facio.This verb expand ... . dhe: Proto-Indo-European root meaning "to set, put, place." The Latin verion is facere ... such as infect, affect, etc. The dh sound becomes 'f' or 'd' in Latin, the 'd' is understandable