unruffled vs unflustered

unruffled and unflustered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unruffled	No	Yes	No	No
unflustered	No	Yes	No	No

As adjectives, unruffled and unflustered are synonyms defined as:

unruffled and unflustered: free from emotional agitation or nervous tension

Other synonyms of unruffled include unflurried, unperturbed.

unruffled (adjective)	unflustered (adjective)
(of a body of water) free from disturbance by heavy waves	free from emotional agitation or nervous tension
free from emotional agitation or nervous tension