caai2 gaai3踩界
Jyutpingcaai2 gaai3
Yalecháai gaai
Definition
To step on a boundary line, or figuratively to enter a grey area by bordering on a violation or rule-breaking.
- to step on the boundary line
- figurativeto enter a grey area; to push the limits; to border on a violation
colloquialdescriptionsother
How it's used
Originally referring to stepping on a boundary line in sports, this term has evolved into a common metaphor for behavior that is socially or legally questionable. It describes actions that hover in a grey area, neither clearly right nor explicitly wrong, but likely to cause offense or trouble. It is frequently used to criticize someone for being tactless or for testing the limits of a rule.
Examples
Don't be so provocative with what you say.
His design is really pushing the boundaries.
Related words
Common phrases
boundary-pushing behavior
Common mistake
Do not confuse this with simply breaking a rule, which would be 犯規. 踩界 specifically implies being on the edge of a boundary, whereas 犯規 implies having already crossed it.
Grammar color guide
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Grammar guides
- TonesCantonese has six tones, and the tones can change in certain grammatical contexts. Learn the six tones and the rules for tone change.
- Time and datesClock time, days of the week, months, and years. The patterns you need to make plans and talk about when things happen.
- Modal verbsHow to say can, will, may, should, must, and want. The core modal verbs of Cantonese and the differences that trip up beginners.



