English
marshiness
From marshy + -ness.
Formed from marshy + -ness
Proto-Indo-European *móri ‘sea’
…
Proto-West Germanic *marisk ‘lake-like, marshy’
Old English merisċ
Middle English mersch ‘a region of marshland or damp meadowland’
Middle English merschy
English marshy
Today it means
noun The quality or state of being marshy.
Language periods are conventional ranges, not dates for this word.
Etymograph / marshiness