Boreism comes from bore (a tiresome person) + -ism. Bore in this sense (18th century) is of obscure origin, perhaps from French bourre ('padding, stuffing'), or onomatopoeic. Morphologically, boreism is transparent: it draws on bore (a tiresome person) + -ism. Used as a noun, boreism now means "the behavior or character of a bore; tedious dullness", so the present definition can be read against the older forms and meanings. The same lexical family is also visible in related forms such as bore, boring, and boredom. That uncertainty is part of the entry: the safest account is the attested form and the limited comparisons preserved with it.