high muckamuck vs dignitary

high muckamuck and dignitary both are nouns.

Word	Noun	Adjective	Verb	Adverb
high muckamuck	Yes	No	No	No
dignitary	Yes	No	No	No

As nouns, high muckamuck and dignitary are synonyms defined as:

high muckamuck and dignitary: an important or influential (and often overbearing) person

Other synonyms of high muckamuck include high-up, panjandrum, very important person, VIP.

high muckamuck (noun)	dignitary (noun)
an important or influential (and often overbearing) person	an important or influential (and often overbearing) person