/ Dictionary / Index S southeasterly: Meaning and Definition of Find definitions for: south•east•er•ly Pronunciation: (south"ē'stur-lēNaut.sou"ē'stur-lē), [key] — adj., adv. toward or from the southeast. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: southeasterly (Thesaurus) southeaster southeasterner 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