strongheartedly adverb2 •Bravely, courageously.They listened as Walter Frank urged the audience "strongheartedly to proclaim great deeds and thus to help develop a people that not only understands great deeds but is also able to perform them." — 1985 •Resiliently.For a year past, he knew the inevitable, yet by his indomitable will kept strongheartedly to his' work, sustained by a rugged vitality. — 1916 formsmore strongheartedly · most strongheartedly