Heat
Heat noun - Depth of feeling.
Usage example: informed the doctor, with considerable heat, that she had been kept waiting for three hours
Passion is a synonym for heat in feeling topic. In some cases you can use "Passion" instead a noun "Heat", when it comes to topics like abandon. popular alternative
Passion
Passion noun - Depth of feeling.
Usage example: your passion for your cause is admirable, but you still can't insult people who disagree with you
Heat is a synonym for passion in emotion topic. You can use "Heat" instead a noun "Passion", if it concerns topics such as fervour, abandon, strong emotion. popular alternative
Mutual synonyms
How words are described
Both words in one sentence
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Filled with love and tenderness, heat and passion.
Source: Double-Edged Answer -
Slipknot Ponytail: Except instead of in the heat of battle, it gets undone in the heat of passion.
Source: Visual Novel / Soul Link - It may be incestuous or metaphorical but deep passion is implied (Temptation heat/beats like a drum/deep in your veins/I will not lie, little sister/come to your brother/unchain me sister/love is with your brother)
Source: Brother Sister Incest / Music
Cite this Source
Passion and Heat. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/heat/passion
Heat & Passion. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/heat/passion>.
Passion or Heat. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/heat/passion.
Google Ngram Viewer shows how "heat" and "passion" have occurred on timeline