spunky vs mettlesome

spunky and mettlesome both are adjectives.

Word	Noun	Adjective	Verb	Adverb
spunky	No	Yes	No	No
mettlesome	No	Yes	No	No

As adjectives, spunky and mettlesome are synonyms defined as:

Other synonyms of spunky include game, gamey, gamy, gritty, spirited.

spunky (adjective)	mettlesome (adjective)
willing to face danger	willing to face danger
showing courage	having a proud and unbroken spirit