agonistic vs strained

agonistic and strained both are adjectives.

Word	Noun	Adjective	Verb	Adverb
agonistic	No	Yes	No	No
strained	No	Yes	No	No

As adjectives, agonistic and strained are synonyms defined as:

agonistic (adjective)	strained (adjective)
of or relating to the athletic contests held in ancient Greece	struggling for effect
struggling for effect	lacking natural ease
striving to overcome in argument	showing signs of mental and emotional tension
	lacking spontaneity; not natural