General · EdgepediaSeptember 17, 20265 min read

Curiosity killed the cat

Curiosity killed the cat is an English proverb warning that unnecessary inquiries or prying into matters that do not concern one can lead to unhappiness, misfortune, or danger. It is typically said to stop someone asking unwanted questions, and it is often answered with the joking rejoinder "but satisfaction brought it back."¹^•²

Key fact	Detail
Meaning	Making unnecessary inquiries may result in misfortune; some things are better left unquestioned or undiscovered³
Original form	"Care killed the cat", where care meant worry or sorrow, not looking after someone¹
First record of the original	Ben Jonson's play Every Man in His Humour, 1598¹
Earliest curiosity wording	"They say curiosity killed a cat once", Waterford Mirror and Tramore Visiter (Ireland), 28 October 1868; the Oxford English Dictionary marks the sense as originally Irish English³
First proverb collection listing	James Allan Mair's A Handbook of Proverbs, 1873, which marks it as Irish⁴
Extended form	"Curiosity killed the cat, but satisfaction brought it back", first known printing in The Titusville Herald (Pennsylvania), December 1912¹

The older form: care killed the cat

The proverb began as "care killed the cat". In the Elizabethan phrase, "care" meant worry or sorrow rather than the modern sense of looking after someone, so the saying warned that fretting could wear out even a creature with nine lives.¹ The nine lives of the cat were already proverbial in the mid-sixteenth century; John Heywood's 1546 proverb collection includes the line "A woman hath nyne lyues lyke a cat."⁵

The earliest known record is in the English playwright Ben Jonson's comedy Every Man in His Humour, written in 1598: "Helter skelter, hang sorrow, care'll kill a Cat, up-tails all, and a Louse for the Hangman." The play was performed in 1598 by the Lord Chamberlain's Men, a troupe that included William Shakespeare.¹ Shakespeare reused the idea about a year later in Much Ado About Nothing: "What, courage man! what though care killed a cat, thou hast mettle enough in thee to kill care."¹ The way Shakespeare uses the line suggests it was already a familiar saying rather than his own coinage.⁶

The "care" form remained current for three centuries. Brewer's Dictionary of Phrase and Fable was still defining it in 1898: "Care killed the Cat. It is said that a cat has nine lives, but care would wear them all out."¹ A related variant, "Care will kill the cat, yet there's no living without it", is recorded in proverb collections.⁷

The shift to curiosity

Curiosity had a poor reputation for centuries before it took over the proverb. Saint Augustine wrote in Confessions (AD 397) that God "fashioned hell for the inquisitive"; John Clarke's Paroemiologia (1639) offered "He that pryeth into every cloud may be struck with a thunderbolt"; and Lord Byron in Don Juan called curiosity "that low vice". This long disapproval, combined with the cat's reputation for inquisitiveness, is the usual explanation for why the cat's demise was reassigned from care to curiosity.¹

The earliest known printed use of the curiosity wording is in an unsigned short story, "Aunt Hetty's Stratagem", in the Irish newspaper the Waterford Mirror and Tramore Visiter on 28 October 1868: "They say curiosity killed a cat once, so I will take warning and let things remain as they are."³^•⁵ James Allan Mair's A Handbook of Proverbs (1873) lists "curiosity killed the cat" with the letter "I" after it, marking it as an Irish proverb, which suggests the idiom was already established by then.⁴

Sources differ on when the exact modern wording first appeared. The Phrase Finder's earliest find of the precise current form is an 1898 item in The Galveston Daily News about a "Thomas cat" (a jokey form of tom cat), while the OED and other researchers accept the 1868 Irish newspaper citation as the earliest attestation of the phrase and its variants.¹^•³ Dictionary.com, by contrast, states that the expression apparently first appeared in print in an O. Henry story in the early 1900s, naming "Schools and Schools" (1909) as the first recorded use.⁸ O. Henry's line, "Curiosity can do more things than kill a cat", is a variant rather than the fixed proverb, and the saying was evidently well known in the United States by then; it is sometimes wrongly attributed to Eugene O'Neill, whose play Diff'rent (1920) merely quotes it.⁴^•⁹

"But satisfaction brought it back"

A common extended form reverses the warning: "Curiosity killed the cat, but satisfaction brought it back." The second half is a late addition whose source has not been traced; the earliest known printing found by the Phrase Finder is in The Titusville Herald of Pennsylvania in December 1912.¹ The rejoinder turns the proverb on its head, suggesting that the reward of finding out may be worth the risk.¹⁰ Variants circulate, including "satisfaction bought it back" and "information brought it back", but the satisfaction version is by far the most common.¹¹^•¹²

Use and equivalents

Modern dictionaries define the saying as a warning not to ask too many questions about something that does not concern the asker.² It is usually informal and often teasing, though it can carry a genuinely cautionary edge.¹³ Many languages have their own equivalents, including Spanish La curiosidad mató al gato (a direct translation), French La curiosité est un vilain défaut ("curiosity is an ugly flaw"), German Neugier ist der Katze Tod ("curiosity is the cat's death"), and Japanese 好奇心は猫をも殺す ("curiosity can even kill a cat").¹⁴ Chinese uses the loan-translation 好奇害死猫, now common.¹⁰

References

Initially written Sep 17, 2026 · Reviewed: Sep 30, 2026; Oct 25, 2026 · Edited: Sep 30, 2026; Oct 25, 2026