To let off steam
Meaning: To release pent-up emotion or stress.
Language: English
Literally: To let off steam
Category: Daily Life
Origin: Carries more menace in its original setting than the modern casual use suggests. A nineteenth-century steam boiler under pressure was a genuinely dangerous object, and boiler explosions were a routine industrial and maritime catastrophe — American riverboat accidents alone killed people in the thousands over the century. The safety valve existed to vent excess pressure deliberately before it could build to the point of rupture, which made letting off steam not a matter of comfort but the specific procedure standing between a working engine and a lethal failure. Figurative use is attested from the 1830s and 1840s, when steam power was new enough for the mechanism to be widely understood, and it carries the same implication: the pressure is real, it is going somewhere, and controlled release is preferable to the alternative.
More idioms — Daily Life
- To face the music — To confront the unpleasant consequences of your actions.
- To add insult to injury — To make a bad situation worse by a further offense.
- Aus dem Häuschen sein — To be beside yourself with excitement.
- No dar pie con bola — To get everything wrong; to do nothing right.
- Capire fischi per fiaschi — To misunderstand completely.
- Avere un chiodo fisso — To be obsessed with one idea.
More English idioms
- To butter someone up — To flatter someone to win their favor.
- Russian roulette — Any high-risk activity undertaken needlessly, where disaster may strike without warning.
- pull back the curtain — To expose a hidden truth or reality behind an appearance.
- present company excepted — These remarks do not apply to anyone currently present in this conversation.
- on sufferance — Tolerated reluctantly and only because one has no better choice.
- set in stone — Unchangeable and permanent, fixed beyond modification.
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