sniffy vs supercilious

sniffy and supercilious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sniffy	No	Yes	No	No
supercilious	No	Yes	No	No

As adjectives, sniffy and supercilious are synonyms defined as:

sniffy and supercilious: having or showing arrogant superiority to and disdain of those one views as unworthy

Other synonyms of sniffy include disdainful, haughty, imperious, lordly, overbearing, prideful, swaggering.

sniffy (adjective)	supercilious (adjective)
having or showing arrogant superiority to and disdain of those one views as unworthy	having or showing arrogant superiority to and disdain of those one views as unworthy
	expressive of contempt