idiom
More Heat Than Light
mor HEET than LYT
/mɔːr hiːt ðən laɪt/Listen
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Syllable breakdown
moreheatthanlight
Dictionary meaning
Used to describe a discussion, argument, or debate that generates strong emotion and conflict ('heat') but produces little understanding, insight, or clarity ('light'); said when controversy is intense but unproductive
History and origin
From the distinction between heat and light as outputs of combustion; a productive flame gives both heat and illuminating light; a wasteful one mostly burns
Examples
- The parliamentary debate on energy policy generated more heat than light, with both sides talking past each other.
- Online arguments about nuclear power often produce more heat than light.
Synonyms: sound and fury (signifying nothing)
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