Thread:User talk:CodeCat/cum Latin/reply (13)

More or less, yes. Those forms have actually been extended with a further suffix, of which the origin isn't known. The masculine accusative pronouns have an extra unidentified suffix. Gothic and Old Norse are the only Germanic languages that seem to have retained the unsuffixed forms, but only in their adverbial meaning. Compare and  with the accusative pronoun forms  and. The Germanic languages also have no trace of any adverbs based on the feminine forms, like Latin has.

The difference between the -e- forms and -a- forms is not Germanic, but developed independently in Middle English and Middle or Modern German. It doesn't occur in any of the other languages, which use the same word for both.

There is no specific reason for the qu- and t- being parallel, it's just a matter of meaning. *kʷ- was the stem in PIE that was used to form interrogatives, while *t- was the stem used to form demonstratives. There were other stems in use for demonstratives too, but *t- was by far the most common and general in use.