Comparative Idioms

Phrase easy to understand or obvious
as clear as day
I hope my friends don't get lost on the way to my house. My instructions were as clear as day!
as exciting as watching paint dry
Did you attend the lecture? It was about as exciting as watching paint dry.
Phrase in perfect health
as fit as a fiddle
"How did Grandma's doctor's appointment go?""It went well! She's as fit as a fiddle."
Phrase very gentle
as gentle as a lamb
I know my dog looks and sounds mean, but really she's as gentle as a lamb.
Phrase very happy
as happy as a clam
Just give me a pint of ice cream and the TV remote and I'm as happy as a clam.
Phrase not ​feeling or ​showing any ​emotions such as ​sympathy, ​fear, or ​worry
as hard as nails
My gym teacher Mr. Straughter is as hard as nails. I don't think I've ever seen him smile!
Phrase extremely light
as light as a feather
My bag feels as light as a feather now that I don't have to carry around my school books.
Phrase overly proud
as proud as a peacock
John has been acting as proud as a peacock ever since he bought his new car.
Phrase very ill
as sick as a dog
"Have you seen Neil? He wasn't at school today.""He stayed home, he's as sick as a dog."
Phrase having great physical power and ability
as strong as an ox
The captain of our football team is as strong as an ox. It takes three guys to tackle him!