Aptotic

• (a.) Pertaining to, or characterized by, aptotes; uninflected; as, aptotic languages.
Found on http://thinkexist.com/dictionary/meaning/aptotic/

Aptotic

Ap·tot'ic adjective Pertaining to, or characterized by, aptotes; uninflected; as, aptotic languages.
Found on http://www.encyclo.co.uk/webster/A/111

aptotic

uninflected; indeclinable
Found on http://phrontistery.info/a.html
No exact match found