What does cootie mean?
"Cootie" is an informal noun best known today as a children's fiction: an imaginary germ or contaminating quality that schoolchildren jokingly claim can be caught through contact with another child, most often one of the opposite sex. The term fuels classic playground rituals such as the "cootie shot," a pretend inoculation traced on the arm, and the folded-paper fortune teller known as a "cootie catcher." The word has older, more literal roots: among American soldiers in the First World War, "cootie" was slang for the body lice that infested men living in trenches, and the name was borrowed from a Malay word for lice encountered in Southeast Asia and the Pacific. In modern usage the word carries no stigma outside of play — it is whimsical, nostalgic, and almost entirely confined to informal contexts, making it less a medical term than a piece of shared cultural folklore passed down among generations of children.
An imaginary germ or infection that children playfully attribute to others, especially peers of the opposite sex.
""Keep away from Ethan — he's got girl cooties!""
Almost exclusively used by or about children in playful, informal settings.
(Historical slang) A body louse, particularly one afflicting soldiers during wartime.
"The veterans recalled burning lice — cooties — out of the seams of their tunics."
Largely obsolete today except in historical writing about World War I.
The plural "cooties" is the standard form and is far more common than the singular in everyday playground use, where the word nearly always refers to a vague cloud of germs rather than one specific creature.
""Everyone knows the fourth graders are covered in cooties.""
American World War I soldiers nicknamed their body lice 'cooties' — and the name later migrated to the playground as the ultimate fictional childhood contagion.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cootie
"Cootie" entered English in the early twentieth century, borrowed from Malay "kutu", meaning louse, likely via contact between American soldiers and local populations in the Philippines and later in the trenches of Europe, where it served as slang for body lice. After the war the term shed its literal meaning and was adopted by American children as a purely imaginary contagion. Its ultimate source lies in the Austronesian language family rather than Latin or Greek, so it has no classical cognates in English.
How cootie is actually used
Strictly informal and playful; the word appears almost exclusively in children's speech, playground games, and nostalgic adult references. The louse sense is now largely historical, surviving mainly in accounts of World War I trench life.
Easily confused with cootie
"Coot" is a real waterbird of the rail family, whereas "cootie" is a children's imaginary germ (or historically, a body louse).
"Cutie" means an attractive or endearing person, while "cootie" refers to a fictitious contaminating germ — similar sounds, opposite connotations.