From. Do not use from with whence, hence and thence.

Wrong: From whence have you come?
Right: Whence have you come? From where have you come?

Funny. Do not use funny for singular or strange. Funny is an overworked word.

Wrong: It is funny that he died.
Right: It is singular that he died.

Gent. Do not use the word at all. Say gentleman or man.

Gentleman. Do not use gentleman to denote sex only. Say man. Gentleman is properly used, however, to denote a person of refinement.

Wrong: Only gentlemen are allowed to vote in Pennsylvania.
Right: Mr. Lincoln was a gentleman in the true sense of the word.

Got. Do not use got with have or had to indicate merely possession or obligation. Got means acquired through effort.

Wrong: I have got the measles. You have got to do it.
Right: I have the measles. You must do it.
Right: After much study I have got my lesson.

Grand. Do not use grand in place of some more definite and accurate expression. It is another over-worked word.