Curse under his breath - Idioms by The Free Dictionary
curse (someone) under (one's) breath (redirected from curse under his breath)
curse (someone) under (one's) breath
To murmur something in such a soft, quiet voice that others cannot hear it distinctly. (Said especially of rude, unpleasant, complaining, or impertinent remarks.) I could hear Bill cursing the boss under his breath as he walked back to his desk after his annual review. If you curse under your breath around me again, I'll tan your hide so quick it will smart for a week!
References in periodicals archive
Such generosity was admirable of course, but he'd then curse under his breath
as they inevitably fluffed the chance.
HENRY DALY had plenty to celebrate despite becoming the latest rival to have reason to curse under his breath
at the marvel that is Tony McCoy as the champion denied him having four winners from five runners on the day.
He was clearly upset at some of the remarks made, and when walking off the tee was heard to swear and curse under his breath