Have you ever heard the expression “as American as apple pie?” This expression is an example of a phrase in English that compares two things. It uses the following formula:

noun + be verb + as + adjective + as +  noun

Here are some more examples:

The best thing about the “as . . . as” comparison is that you do not have to change the adjective to a comparative (adding “-er”) or superlative (adding “-est”) form. Keeping the adjective the same means that you will probably make less mistakes! It’s as easy as pie (another great expression!).

Here are some more useful “as . . . as” idioms:

  • as blind as a bat (can’t see)
  • as cool as a cucumber (very cool, laid-back)
  • as busy as a bee
  • as clean as a whistle
  • as free as a bird
  • as happy as a clam
  • as hard/tough as nails
  • as plain as day (when something is obvious)
  • as sick as a dog
  • as soon as possible


Can you guess the adjectives for the following idioms?

  • as ______________ as hell
  • as ______________ as a lion
  • as ______________ as an elephant
  • as ______________ as a mouse
  • as ______________ as a feather
  • as ______________ as mud (sarcastic)



  • as HOT as hell
  • as BRAVE as a lion
  • as CLUMSY as an elephant
  • as QUIET as a mouse
  • as LIGHT as a feather
  • as CLEAR as mud (sarcastic)