curse under (one's) breath(redirected from cursing under their breath)
curse under (one's) breath
To utter obscene or blasphemous remarks in a very soft or indistinct voice, such that others are unable to hear or understand them clearly. Steven stormed away from his parents and into his room, cursing under his breath the whole way. My dad spent nearly an hour cursing under his breath as he tried to fix the engine on the side of the road.
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