Here's a test for you – can you define the following words, all of which have now been included in a popular English dictionary? And for a bonus point, which one do you think was used in parliament by the Australian Prime Minister?

All the above, mostly popularized by Gen Z and Gen Alpha, are among 6,000 new entries added to the online edition of the Cambridge Dictionary over the last year, its publisher said Monday.

Cambridge University Press took on the challenge of defining skibidi, a word popularized in online memes, as a term which had "different meanings such as cool or bad, or can be used with no real meaning".

The gibberish word was spread by a YouTube channel called Skibidi Toilet and is associated with the mindless, "brain rot" content found on social media and consumed by Gen Alpha's overwhelmingly digital lifestyle.

The dictionary defined delulu, derived from the word delusional, as "believing things that are not real or true, usually because you choose to".

As an example, it cited a 2025 speech in parliament where Australian Prime Minister Anthony Albanese used the phrase "delulu with no solulu".

"It's not every day you get to see words like skibidi and delulu make their way into the Cambridge Dictionary," said Colin McIntosh, Lexical Programme manager at the Cambridge Dictionary.

"We only add words where we think they'll have staying power. Internet culture is changing the English language and the effect is fascinating to observe and capture in the dictionary."

One example is tradwife, a portmanteau of "traditional wife", reflected "a growing, controversial Instagram and TikTok trend that embraces traditional gender roles".

Another is broligarchy, which adds the prefix 'bro' to the existing word oligarchy – government by a select few powerful people – to create a word defined as "a small group of men, especially men owning or involved in a technology business, who are extremely rich and powerful, and who have or want political influence".

Other new phrases include lewk, used to describe a unique fashion look and popularised by RuPaul's Drag Race, and inspo, short for inspiration.

And a mouse jiggler? It's nothing to do with maneuvering rodents – it's a product of the working-from-home culture, referring to a way to pretend you're working when you're not.

The working world has also provided neologisms in work wife and work spouse, referencing the mutual help and trust of some office relationships.

But it's not all light-hearted new entries. There's also forever chemical, referring to man-made chemicals that stay in the environment for years and have gained traction as concerns grow about the irreversible impact of climate change on the health of humans and the planet.