a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a gadget; dingus; thingumbob.
a scrap or morsel of food left at a meal.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
1598, "undo from a fixed position, from un- (2) + settle. Of the mind, feelings, etc., attested from 1644. Unsettled "not peaceful, not firmly established" is recorded from 1591. Meaning "not occupied by settlers" is attested from 1724.