Added to nouns and adjectives to form adjectives meaning “having the quality of”, either “involving the referent” or “analogous to it”. · Added to verbs to form adjectives meaning "inclined to".
From Middle English overmodi, ofermodiȝ, from Old English ofermōdiġ (“haughty, proud, arrogant”), from ofermōd (“arrogance, pride”) + -iġ. Equivalent to over- + mood + -y.