/ Dictionary / Index S straight arrow: Meaning and Definition of Find definitions for: straight' ar'row Pronunciation: [key] — Informal. Informal. a person who manifests high-minded devotion to clean living and moral righteousness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: straightarrow (Thesaurus) straight-arm straightaway Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language