To omit means to leave out. Here are some sentences.
Don't omit my name from the invitation this time.
If you're not careful, you might omit something important from
We will omit anything that is offensive before we publish the
There is no rule requiring one to omit prepositions. Some
require that you do not end a sentence with a preposition, but that
doesn't mean omit them entirely. Usually one has to use the
preposition with a which clause: to which, of which, for which,