Meaning of the word "a word to the wise is sufficient" in English

What does "a word to the wise is sufficient" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a word to the wise is sufficient

US /ə wɜrd tu ðə waɪz ɪz səˈfɪʃənt/
UK /ə wɜːd tuː ðə waɪz ɪz səˈfɪʃənt/
"a word to the wise is sufficient" picture

Idiom

a brief warning or hint is enough for a sensible person to understand and act upon

Example:
I shouldn't have to explain why this is a bad idea; a word to the wise is sufficient.
The boss is in a bad mood today, so a word to the wise is sufficient.