Back of your hand Meaning in English
expression
Definition
If you know something like the back of your hand, you know it very well and are very familiar with it, usually because you've spent lots of time with it.
Usage & Nuances
This is an informal, conversational idiom. It usually refers to places, skills, or topics you know extremely well, like 'I know this city like the back of my hand.' Avoid using it in very formal writing. The phrase is always about deep familiarity.
Example Sentences
I know this neighborhood like the back of my hand.
basic
She knows the rules like the back of her hand.
basic
My dad knows this road like the back of his hand.
basic
Ask Lisa, she knows the train schedule like the back of her hand.
natural
After ten years working there, he knows the office like the back of his hand.
natural
I could get home with my eyes closed—I know this route like the back of my hand.
natural