Synonyms for Heart:

adj.

inward (adjective)
internal, core, inward, interior, subjective, intrinsic, intestinal, inland, inner, visceral, central.
suitable (adjective)
pleasant, pleasing, lovable.

n.

atheroma, B, bleeding, artery, clock, beat, atrium, anticoagulant, aorta, organ, abo system. flank, girth, back, abdomen, front, chest, root, quintessence, belly button. jack, deuce, club, body, diamond, house of cards, deck, ace, face card, card. temper, your inner self, passion, feelings, sensation, frame of mind, mood, undercurrent. element, feature, dauntlessness, intrepidness, gutsiness, gut, pluckiness, valiantness, pluck, Braveness, stoutheartedness, valiance, fear, spunkiness, gallantry, bravery, intrepidity, key, priority, valor, staple, valiancy, burning issue/question, moxie, courage, fearlessness, courageousness, concern, fortitude, basis, undauntedness, Doughtiness, gameness. coil, bulge, ball, circle, balloon, cone, stuff, bowl, crescent, Gravamen, be, bubble, band. edge, center of gravity, cross-section, seat, headquarters, the middle. peel, peelings, skin, floret, spear, quick, pulp, cob, flesh, start, bottom. attribute (noun)
spirit.
blood-pumping organ in an animate being (noun)
clock, ticker.
bravery (noun)
valor.
cognition (noun)
bosom.
courage (noun)
mettle, spunk, nerve, gallantry, pluck, moxie, mind, dauntlessness, fortitude, spirit, bravery.
essence, central part (noun)
focus, marrow, core, pith, bosom, center, nucleus, polestar, nitty-gritty, quintessence, seat, nub, crux, quick, kernel, middle, gist, hub, root.
focus (noun)
epitome, kernel, rendezvous, focus, essence, plenum, bottleneck, meat, gathering, intersection, lure, lodestar, hub, marrow, magnet, nucleus, rally, crossing, spirit, soul, asymptote, core, funnel, center, polestar, axle, forum, crux.
heart (noun)
eye, nub, bosom, marrow, affection, spunk, ticker, inwardness, spirit, pump, core, centre, affectionateness, sum, nerve, heart and soul, fondness, pith, mettle, middle, kernel, tenderness, nitty-gritty, warmheartedness, substance, essence, center, meat, gist.
middle (noun)
half, mean, midpoint, midst, median, axis, middle, epicenter, pivot, nub, halfway point, half-and-half, mediocrity, medium, bisection, average.
nerve center (noun)
epicenter.
person's emotions (noun)
soul, tenderness, response, affection, sensitivity, concern, pity, sympathy.

Other synonyms:

diamond, deck, undauntedness, courageousness, gameness, Gravamen, courage, emotion, jack, abdomen, belly button, gutsiness, flank, frame of mind, Doughtiness, spunkiness, face card, back, deuce, Braveness, stoutheartedness, club, undercurrent, valiantness, center of gravity, pluckiness, valiance, girth, fearlessness, moxie, front, valiancy, dauntlessness, intrepidness. cob, bravery, root, mood, cross-section, intrepidity, chest, floret, gallantry, house of cards, gut, card, temper, stuff, valor, quintessence, fortitude. ace, headquarters, sensation, spear. passion. bottom, quick. seat. Other relevant words:
mettle, spunkiness, ticker, valiancy, valiance, clock, fondness, mood, dauntlessness, warmheartedness, gut, spear, root, inwardness, deuce, seat, undercurrent, club, fearlessness, heart and soul, card, bosom, sensitivity, passion, floret, frame of mind, basis, center of gravity, gameness, pump, sum, quintessence, flank, headquarters, gist, valor, pith, response, Doughtiness, gallantry, bottom, valiantness, stoutheartedness, concern, stuff, centre, intrepidness, gutsiness, Braveness, pluckiness, feelings, undauntedness, cob, mind, temper, ace, flesh, nerve, back, nitty-gritty, chest, courageousness, affection, pluck, Gravamen, pulp, moxie, bravery, affectionateness, quick, tenderness, courage, spunk, pity, girth, fortitude, jack, abdomen, substance, eye, intrepidity, sympathy.

Usage examples for heart

  1. I do love you with all my heart – The Man with a Shadow by George Manville Fenn
  2. By the heart of life I suppose he meant married love. – The Pool in the Desert by Sara Jeanette Duncan
  3. But now my heart is at rest. – Vikram-and-the-Vampire-Classic-Hindu-Tales-of-Adventure-Magic-and-Romance by Burton, Isabel, Lady