Definition of after:

part of speech: conjunction

When- as, you will come to me after he has seen you.

part of speech: adjective

Later in time- as, it is an after thought.

part of speech: adverb

At a later time.

part of speech: preposition

Behind; later- as, he went home after dinner.

Usage examples:

• Suppose Mignon had been right, after all. Pauline Lester in "Marjorie Dean High School Freshman".

• Then after the man had asked, " Is there anything else you require, sir?" Marie Belloc Lowndes in "Jane Oglander".

• Then they went after Hank Porler, but he could not be found. Ralph Bonehill in "Leo the Circus Boy".

• After what had happened to- day, everything was possible.... Marie Belloc Lowndes in "Jane Oglander".