mettlesome vs spunky

mettlesome and spunky both are adjectives.

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

As adjectives, mettlesome and spunky are synonyms defined as:

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

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