How about this definition ?

  Cliché :  noun, an idea or expression deficient

  in originality or freshness.

Clear enough,I guess.Many people prefer not to

use clichés when they are expressing their ideas

in english.It´s much better ,indeed, to give your

opinions about different subjects using "fresh"

words,I mean, instead of using words which

are always repeated and too obvious.

You may try to use something

more original.

When you think someone or some-

thing is ugly ,you may say :

.Beauty is a matter of taste.

.You can´t tell a book by its cover.

.It is inside that really matters or

  Beauty is only skin deep.

.It/He has other qualities

Some people say that the constant use of

clichés become a barrier to communication.

"When readers and listeners come across

these tired expressions,they start turning out

and completely miss the message

-assuming there is one ."

  By the way,this phrase  above was

chosen to be the most irritating or

annoying cliché in a research made

in Britain some years ago.

Besides that one ,there were other

words such as :

Absolutely !

Awesome !

Literally .

Basically .

.Thinking outside the box.

.Bottom line  

Well,do you use a lot of them ? Do you

have a favorite cliché ?

I do have one : Carpe Diem !

Anyway , let´s try to avoid them so that

our listeners may enjoy our conversations.