Reconstruction:Proto-Germanic/-naną

Etymology
Reconstructed by Ringe from an alternating suffix (singular) ~  (nonsingular), from  ~, from n-infix presents to laryngeal-final roots that were reanalysed as a separate suffix (as in several other branches).

Inflection
These verbs are always intransitive, so there are no passive forms. They seemed to have originally lacked a past participle as well.

Descendants
This suffix was preserved as a separate class only in Gothic. In Old High German, it mostly merged with the third weak class, while in the other descendants it merged with the second weak class.