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Finnish hapan
Estonian hapu (cognate)
Proto-Finnic *hap'oin (inherited)
Hungarian savanyú (cognate)
Erzya чапамо (cognate)

Estonian hapu (cognate)
Finnish happo (suffix)
Finnish hapantua (affix)
Finnish hapata (suffix)
Finnish hapanimelä (compound)
Finnish hapannaama (compound)
Finnish hapanlaskeuma (compound)
Finnish hapankaali (compound)
Finnish happamuus (suffix)
Finnish happamoitua (affix)
Finnish hapantaikina (compound)
Finnish hapansilakka (compound)
Finnish hapanleipä (compound)
Finnish hapankerma (compound)
Finnish happamoittaa (affix)
Finnish hapanhai (compound)
Finnish hapankirsikka (affix)
Finnish hapankorppu (compound)
Finnish hapanjuuri (compound)
Finnish hapansavimaannos (compound)
Finnish hapahko (affix)
Finnish happamasti (affix)
Finnish happamesti (affix)
Finnish hapanlohko (affix)
Finnish hapanvelli (affix)
Finnish happamahko (affix)
Finnish happamanmakea (affix)
Finnish hapankala (affix)
Hungarian savanyú (cognate)