/ Dictionary / Index G Gustavus V: Meaning and Definition of Find definitions for: Gustavus V Pronunciation: (gus'täv). [key] 1858–1950, king of Sweden 1907–50: advocate of Swedish neutrality during World Wars I and II. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gustavus IV Gustavus VI Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language