a slow burn

a slow burn

A slow burn is a feeling or effect that develops gradually. In a single weekend the slow burn of public disgust turned into a bonfire. He promised a slow burn campaign over the next 18 months to support the idea of economic change. Note: In American English, people say that someone does a slow burn if they gradually become more and more angry. Wilson, sensing a challenge to his power, did a slow burn.
See also: burn, slow