A vicious circle is a feedback loop of worsening problems. Cambridge also records “vicious cycle” as a variant in American English; the core idea is the mutually reinforcing negative sequence, not simply any repeated event.
ReviewedEvidence1 sourceSectionPhrases & Idioms
Quick answer
A “vicious circle” is a harmful self-reinforcing cycle in which one problem causes another that then makes the first problem worse.
Key details
Canonical Formvicious circle
Core Meaninga self-reinforcing bad situation in which one problem causes another that makes the original problem worse
Further guidance
History Boundary
Current dictionary-supported meaning is published without asserting an exact coinage or absolute first use.
Meaning
a continuing unpleasant situation in which one problem causes another that in turn worsens the first problem
Variant Boundary
“Vicious cycle” is also used, especially in American English; treat it as a variant expression rather than a separate concept.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
“A blessing in disguise” describes something that initially seems bad or unlucky but later produces a good result. Specialist history places the printed phrase in the mid-eighteenth century, while earlier texts may express similar ideas without proving the same idiom.
“Against all odds” emphasizes success despite obstacles or an unfavorable likelihood. Cambridge also records “against (all) the odds,” so the guide treats those forms as part of the same current idiom rather than inventing separate origin claims.
To “bite the bullet” is to make yourself face or do something difficult or unpleasant, or to act bravely in a difficult situation. A digitized 1891 printing of Rudyard Kipling’s The Light That Failed contains the closely matching wording “bite on the bullet,” providing strong primary evidence for an early figurative use; the exact physical practice behind the idiom remains less certain.
A “close call” is a narrow escape: something bad or dangerous nearly happened, but it did not. The guide stays with current documented meaning and does not add unsupported origin chronology.
A “death spiral” is a self-reinforcing deterioration in which worsening conditions feed further decline. The guide keeps current meaning separate from unsupported origin claims.
A “downward spiral” describes a worsening situation that becomes increasingly difficult to control because one bad event leads to another. Use it for a self-reinforcing deterioration, not merely for any single decline.
“Go Out on a Limb” describes putting yourself in an exposed or risky position, including by taking an unpopular or uncertain stance. The guide keeps the two documented modern senses visible without asserting an unsupported first use.
“Hang by a Thread” describes a serious situation that is extremely precarious, where a small change could lead to failure or another bad result. This guide publishes the current dictionary-supported idiomatic meaning and keeps exact origin, inventor, coinage, and absolute first-use claims unpublished without chronology-grade evidence.
