single-hearted

1 of 2

adjective

sin·​gle-heart·​ed ˌsiŋ-gəl-ˈhär-təd How to pronounce single-hearted (audio)
: characterized by sincerity and unity of purpose or dedication
single-heartedly adverb
single-heartedness noun

single-heartedness

2 of 2

noun

single-heart·​ed·​ness
plural -es
: the quality or state of being single-hearted
fervent saint who sang because he suffered, and whose mysticism was tinged with kindly single-heartednessFrances P. Keyes

Word History

First Known Use

Adjective

1577, in the meaning defined above

Time Traveler
The first known use of single-hearted was in 1577

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Cite this Entry

“Single-hearted.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/single-hearted. Accessed 17 Jun. 2026.

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