Kayu means: Singaporean slang for someone who's slow, dense, or out of the loop - basically calling someone a block of wood. 'Kayu' is the Malay word for wood, and the implication is clear: you're stiff,. It is mainly Singaporean English and may not be understood outside that context. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour.
kayu
Singaporean slang (Singlish) for someone who's slow, dense, or out of the loop — basically calling someone a block of wood.
Definitions
#1·Apr 28, 2026
Singaporean slang (Singlish) for someone who's slow, dense, or out of the loop — basically calling someone a block of wood. 'Kayu' is the Malay word for wood, and the implication is clear: you're stiff, thick, and not processing things at normal speed. It's used affectionately between friends or as a mild insult depending on tone. Classic Singlish energy: borrowed from Malay, delivered with a smirk.
Why so kayu lah, I already explained three times how to use the group chat.
Origin: From Malay 'kayu' meaning wood or timber; used in Singlish to mean dull-witted or slow to understand. Editorial expansion authored on Slangora.
For parents
Kayu means: Singaporean slang for someone who's slow, dense, or out of the loop - basically calling someone a block of wood. 'Kayu' is the Malay word for wood, and the implication is clear: you're stiff,. It is mainly Singaporean English and may not be understood outside that context. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour.
For ESL learners
kayu means: Singaporean slang for someone who's slow, dense, or out of the loop - basically calling someone a block of wood. 'Kayu' is the Malay word for wood, and the implication is clear:. Register: very informal, slang. Suitable only for casual conversation, chat and social media. Do not use in business, academic or news writing. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself.
Cluster: friend
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#2·Apr 27, 2026
(Singapore) ; foolish.
Cluster: fool
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For specific readers
Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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🗺️About Regional & Other slang
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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