Reconstruction:Proto-Germanic/innanē

Etymology
From. The development of the form of the word is uncertain. If the vowel was not part of the suffix itself, it could have been picked up from similar words, namely, in which case the gemination had been introduced by analogy with  or. If the original allative form of were Pre-Germanic, then the ablative could have been built upon that, or as likely the locative , which would explain the vowel and the gemination.

Adverb

 * 1) from inside, from within (ablative direction)