Relating to or characteristic of fustian; bombastic, inflated, or excessively ornate in style.
From 'fustian' (the fabric, but also metaphorically meaning bombastic speech or writing) plus the suffix '-ic', meaning 'of or relating to'.
The shift of 'fustian' from a specific fabric to meaning 'bombastic speech' shows how metaphors embed themselves in language—fancy clothes led to fancy words.
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