/ Dictionary / Index S spiritoso: Meaning and Definition of Find definitions for: spi•ri•to•so Pronunciation: (spir"i-tō'sōIt.spē"rē-tô'sô), [key] — adj. spirited; lively (used as a musical direction). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spirit of nitrous ether spiritous Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language