(as) tough as old boots British phrase simile UK informal
Having tremendous strength of body, mental or will; being resistant to illness or injury.
He's 85 years old, but he's as tough as old boots.
Mia is a warm and friendly person, but she is as tough as old boots at work.
A: Jim's wife died a year ago. He still seems depressed now. B: Don't worry about him. He's tough as old boots.
State something in a very strong, clear and effective way
Someone who has a strong personality
A person whose character is strong and determined, and is not easily influenced by other people
To remain popular or strong for a long period of time.
Used to describe someone who has great physical strength and endurance
The phrase dates from the late 19th century.