-ton / -tön adjectives indicating The shortage of a thing onni 'contentment' → onneton 'unhappy' koti 'home' → koditon 'homeless' When the suitable people are not out there, the graphemes ⟨ä⟩ and ⟨ö⟩ tend to be converted to ⟨a⟩ and ⟨o⟩, respectively. That is widespread in e-mail addresses as https://suomalainen.vuodatus.net/