unperturbed vs unruffled

unperturbed and unruffled both are adjectives.

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

As adjectives, unperturbed and unruffled are synonyms defined as:

unperturbed and unruffled: free from emotional agitation or nervous tension

Other synonyms of unperturbed include unflurried, unflustered.

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