a. 1. Having a heart; having (such) a heart (regarded as the seat of the affections, disposition, or character). [ 1913 Webster ]

2. Shaped like a heart; cordate. [ R. ] Landor. [ 1913 Webster ]

3. Seated or laid up in the heart. [ 1913 Webster ]

I hate the Moor: my cause is hearted. Shak. [ 1913 Webster ]

☞ This word is chiefly used in composition; as, hard-hearted, faint-hearted, kind-hearted, lion-hearted, stout-hearted, etc. Hence the nouns hard-heartedness, faint-heartedness, etc. [ 1913 Webster ]

n. Earnestness; sincerity; heartiness. [ R. ] Clarendon. [ 1913 Webster ]

☞ See also the Note under Hearted. The analysis of the compounds gives hard-hearted + -ness, rather than hard + heartedness, etc. [ 1913 Webster ]

v. t. [ From Heart. ] 1. To encourage; to animate; to incite or stimulate the courage of; to embolden. [ 1913 Webster ]

Hearten those that fight in your defense. Shak. [ 1913 Webster ]

2. To restore fertility or strength to, as to land. [ 1913 Webster ]

n. One who, or that which, heartens, animates, or stirs up. W. Browne. [ 1913 Webster ]