Meaning
"You know better than that" is a gentle but clear criticism. It means "you're smart enough, or experienced enough, not to do this, so why did you?" There is a compliment hidden in it: the speaker believes you have good judgment. That's why parents and teachers use it; it scolds and trusts you at the same time. A close cousin is "know better than to" plus a verb: "She knows better than to argue with the referee."
It is informal and warm, but it points down a little, from someone who feels wiser. From a parent, a mentor or an old friend, it's fine. From a coworker at your level, it can sound like a lecture. Aimed at yourself, it's a common and honest admission: "I should have known better."
In a conversation
- Chen
- Aiko
- Chen
- Aiko
- Chen
- Aiko
Say it out loud
Tap a sentence to hear it. Say it after the voice.
Check yourself
Practice · 3 min
Listen, then repeat. The stress falls on "better". Keep the tone warm, not angry.
Say it today
Use it once in a real conversation before tomorrow. Out loud counts, even to yourself.