The story
- Latin · borrowed fromexcelsior
- English todayexcelsior
From Latin excelsior, comparative of excelsus (“high”). The name of the stuffing material was originally a trademark. As an exclamation, originating in Henry Wadsworth Longfellow's poem Excelsior (1841), based on the New York state motto. Popularized in the comic book fandom by Marvel Comics editor Stan Lee, who chose the term to sign off his columns as it was an obscure term and would confound competing publishers who imitated his style.
Etymology from Wiktionary, CC BY-SA 4.0.