see under heavy heart.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use light heart in a sentence
I turned round, thrust my purse into the lap of the nearest, and with a light heart led the lady back to the hotel.
Morning Star had such a light heart that she was glad just to be alive, and she sang a song of praise as she ran.Stories the Iroquois Tell Their Children | Mabel Powers
He had returned to his tent after the great day at Clermont with a light heart and a merry laugh.God Wills It! | William Stearns Davis
"Thanks, madam," answered Carlino; and with a light heart he ran to find the youngest of the Fates.Laboulaye's Fairy Book | Various
I set to work with a light heart, but later on paid dearly for my ignorance in bitter, bitter disappointment and impotent regrets.The Adventures of Louis de Rougemont | Louis de Rougemont