A person of high rank or official importance; a dignitary or person holding a position of honor.
From 'dignity' plus the noun-forming suffix '-arian' (similar to '-arian' in 'libertarian'). Developed as an alternative, more formal term for 'dignitary.'
Though 'dignitarian' sounds incredibly formal and official, it's almost never used anymore—'dignitary' won out, showing how one word can quietly replace another in the workplace vocabulary!
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