Meaning of the word "there are none so deaf as those that will not hear" in English

What does "there are none so deaf as those that will not hear" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

there are none so deaf as those that will not hear

US /ðɛr ɑːr nʌn soʊ dɛf æz ðoʊz ðæt wɪl nɑːt hɪr/
UK /ðɛər ɑː nʌn səʊ dɛf æz ðəʊz ðæt wɪl nɒt hɪə/
"there are none so deaf as those that will not hear" picture

Idiom

it is impossible to persuade or help people who refuse to listen or acknowledge the truth

Example:
I tried to explain the risks to him, but there are none so deaf as those that will not hear.
She refuses to admit she's wrong; there are none so deaf as those that will not hear.