Comparisons of Equality
As… as…
As blind as a bat
Very bad eyesight
As clean as a whistle
Very clean
As cool as a cucumber
Calm and not nervous
As easy as pie
Very easy
As free as a bird
Feeling very free
As innocent as a lamb
Without guilt
As mad as a hatter
crazy
As old as the hills
Very old
As sick as a dog
Very sick
As sly as a fox
Smart and clever
As fit as a fiddle
In very good health
As happy as a clam
Very happy and content
As light as a feather
Very light
As keen as mustard
Very eager, enthusiastic
As stubborn as a mule
Very obstinate
As poor as a church mouse
Extremely poor