Meaning of the word "a guilty conscience needs no accuser" in English

What does "a guilty conscience needs no accuser" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a guilty conscience needs no accuser

US /ə ˈɡɪlti ˈkɑːnʃəns niːdz noʊ əˈkjuːzər/
UK /ə ˈɡɪlti ˈkɒnʃəns niːdz nəʊ əˈkjuːzə/
"a guilty conscience needs no accuser" picture

Idiom

a person who has done something wrong will feel so much guilt that they will reveal their own wrongdoing without being accused

Example:
He confessed to the theft before the police even asked him anything; a guilty conscience needs no accuser.
She started explaining her whereabouts without being questioned, proving that a guilty conscience needs no accuser.