Secure buttons well.
Meaning: This means to make sure buttons are attached securely so that clothes do not come apart. It's like saying, Make sure the buttons are fastened properly to keep your clothes together.
Choice of Words: Secure means to fix or attach something firmly. Buttons are the small objects used to fasten clothing, and well means to do something thoroughly or properly. In this context, the sentence instructs the listener to attach buttons firmly to prevent clothing from coming undone.
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Related Expressions