FEW SEEM TO know what it means, but the slang term “six-seven” has been voted as children’s slang word of the year.

Oxford University Press surveyed 5,000 children across the UK between the ages of 6 and 14 and some 47% picked “six-seven” as the slang word of the year.

“Aura” was a distant second on 24%, followed by “delulu” on 7%.

And you’re not alone in having no idea what six-seven actually means – some 12% of children surveyed said the term has no meaning.

However, many children said such words still have value, with 72% saying it was important to have words they only use with friends.

Oxford researchers said the use of the term among children “fosters inclusivity and social currency”.

Close to one in ten mentioned “friends” when asked how they use the term, with 28% citing “fun” and “laugh” when asked what six-seven meant to them.

Meanwhile, “peace” was voted Oxford Children’s Word of the Year for 2025.

Peace won 35% of the vote, narrowly followed by AI (33%), whilst 21% opted for resilience.

Oxford said this points to children’s awareness of current affairs.

When asked why they chose peace, one in ten children mentioned “war”, whilst some highlighted specific conflicts such as in Ukraine or Gaza.

2025 also marked the second year running that children selected AI as the runner-up.

When asked why they chose the word, a fifth of children 20% mentioned hearing and talking about AI, which Oxford said highlights its “ubiquitousness in daily life”.

When asked how the word made them feel, children gave positive responses, with more than one in ten using the adjective “excited” or “exciting”.

More than a quarter of six-to-eight-year-olds (29%) chose AI as their word of the year, which Oxford said demonstrates how “even very young children are aware of the everyday role AI plays”.

Andrea Quincey, Oxford University Press’s director of early years and primary publishing, remarked that the Children’s Word of the Year research shows “just how attuned children are to current affairs”.

“Whether that’s calling for peace in response to current conflicts or highlighting how AI has permeated daily life.”

She added: “Perhaps it’s no surprise that six-seven is voted, overwhelmingly, as their slang word of the year.

“A word which brings them laughter and joy and connection with friends.

“We see how important it is for children to have agency over their language away from the grown-up world and share words that adults can’t understand.”