/ Dictionary / Index J jointly: Meaning and Definition of Find definitions for: joint•ly Pronunciation: ( joint'lē), [key] — adv. together; in combination or partnership; in common: My brother and I own the farm jointly. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jointly (Thesaurus) joint life insurance joint resolution Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language