Idiom: Put One's Heart InCheck definitions of...putonesheartinMeaningsTo be emotionally invested in (something); to do (something) wholeheartedly.A-Z Proximitiesput one's foot down onput one's foot down uponput one's foot in itput one's foot in one's mouthput one's head in the sand put one's heart in put one's house in orderput one's mind to itput one's money where one's mouth isput one's name in the hatput one's pants on one leg at a timeSimilar Idiomsput one's heart inone's heart in one's mouthwear one's heart on one's sleeveafter one's own hearteat one's heart outfind it in one's hearthave one's heart inhave one's heart in the right placepour one's heart outset one's heart onto one's heart's contentabsence makes the heart grow fonderall heartbe still my heartbreak someone's heartby heartchange of heartcross my heartcross my heart and hope to diedrive a stake through its heartSimilar Phrasesheart-to-hearthard putput acrossput asideput awayput backput behind barsput differentlyput forwardput input offput on airsput optionput output out feelersput overput rightput throughput to deathput to sleep