a tough customer/cookie
A strong, determined person who is not easily intimidated, discouraged, or defeated. Our principal was a little lady, but she was one tough cookie! She had a difficult childhood, but she's a tough cookie. I know she'll be a success.
a person who is difficult to deal with. He's a tough cookie, but I can handle him. There was a tough cookie in here this morning who demanded to see the manager.
tough customer someone
who is difficult to deal with. Some of those bikers are really tough customers. Walt is a tough customer. Just keep away from him.
a tough cookieor
one tough cookie
If someone is a tough cookie or one tough cookie, they are confident, brave and determined. A pushover is not how I'd describe her. Behind that sweet smile, there lies a tough cookie. He has a reputation as one tough cookie.
a tough ˈcustomer/ˈcookie(informal) a person who knows what they want and is not easily influenced by other people: Self-confident, ambitious and positive, Paula is a tough cookie who is bound to do well.
n. a tough person. There was a tough cookie in here this morning who demanded to see the manager.
n. someone who is difficult to deal with. Bruno is a tough customer. Just keep away from him.