What does dilly mean?
Dilly is an informal English noun used to describe a person or thing that is remarkable, striking, or extreme. Its force depends heavily on tone: it can genuinely celebrate something impressive, but it is just as often deployed ironically to highlight something absurd, outlandish, or memorably bad — a spectacular mistake, a wild story, or an outrageous bill. The word travels well in fixed phrases such as "a real dilly" and "a dilly of a problem," which give it a folksy, conversational flavor. Though its popularity has faded from its mid-twentieth-century heyday, when it rubbed shoulders with kindred exclamations like "lulu," "doozy," and "humdinger," it remains widely understood on both sides of the Atlantic. For writers seeking a light, wry register, dilly offers a compact way to signal that whatever is under discussion stands far outside the ordinary.
nounAn informal term for a person or thing that is outstanding, remarkable, or extreme in some way — often used ironically for something absurd, ridiculous, or exceptionally bad.
- A person or thing that is remarkable, outstanding, or extreme — frequently ironic, describing something absurd, outrageous, or exceptionally bad.
"That storm last night was a real dilly — half the trees on our street came down."
"The final question on the quiz was a dilly that stumped every team."
"You should have seen the excuse he gave for missing the meeting — quite the dilly."
Standard plural; used when referring to more than one remarkable or outrageous thing.
"The comedian's set was full of dillies, each joke funnier than the last."
Calling something 'a real dilly' sounds quaint today, but it once sat comfortably alongside American classics like 'lulu' and 'humdinger' as the go-to way to say something knocked your socks off.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dilly
Dilly arose as informal English slang, most likely in the nineteenth century, though its ultimate origin is obscure and no single derivation has been firmly established. It may have developed as an expressive, nursery-like formation — a pattern common among playful American and British coinages — rather than descending from a documented root. Because of this murky history, there are no reliable cognates to cite. What is clear is its long association with other colorful Americanisms such as "lulu" and "humdinger," which share its role as exuberant markers of the extraordinary.
How dilly is actually used
Informal and somewhat dated, though still understood in both British and American English. Often carries an ironic or affectionate tone; it can praise something genuinely impressive or mock something ridiculous, with context making the intent clear. Commonly intensified in the phrases "a real dilly" and "a dilly of a ...".
Easily confused with dilly
"Dilly" is a noun meaning something remarkable, while "dilly-dally" is a verb meaning to waste time or hesitate indecisively.
"Dill" is an aromatic herb (or slang for a foolish person), whereas "dilly" denotes something striking or extraordinary.