This weeks theme: "some" words.

Meaning:
Vigorous; spirited.

Archaic form:
metalsome

Example:
"Prefontaine's natural abilities as well as his mettlesome hard work and determination made him a legend in the field of long-distance running."

Discussions:
Don't confuse mettlesome with meddlesome (given to meddling) as in "If it weren't for Scooby Doo and those meddlesome kids, I would have gotten away with my overly contrived robbery."

A mettlesome person is someone full of mettle (an alteration of the word "metal") which figuratively, could mean vigor, stamina, or disposition, temperament.
"You are gentlemen of brave mettle; you would lift the moon out of her sphere, if she would continue in it five weeks without changing." - William Shakespeare, The Tempest