a. Behind in place or order: Z comes after Y in the alphabet.
b. Next to or lower than in order or importance.
2. In quest or pursuit of: seek after fame; go after big money.
3. Concerning: asked after you.
4. Subsequent in time to; at a later time than: come after dinner.
5. Subsequent to and because of or regardless of: They are still friends after all their differences.
6. Following continually: year after year.
7. In the style of or in imitation of: satires after Horace.
8. With the same or close to the same name as; in honor or commemoration of: named after her mother.
9. According to the nature or desires of; in conformity to: a tenor after my own heart.
10. Past the hour of: five minutes after three.
11. Irish Used with a present participle to indicate action that has just been completed: "Sure I'm after seeing him not five minutes ago" (James Joyce).
1. Behind; in the rear.
2. At a later or subsequent time; afterward: three hours after; departed shortly after.
1. Subsequent in time or place; later; following: in after years.
2. Located near the stern of a vessel or the rear or an aircraft or spacecraft.
Following or subsequent to the time that: I saw them after I arrived.
2. afters Chiefly British Dessert.
1. In spite of everything to the contrary; nevertheless: We chose to take the train after all.
2. Everything else having been considered; ultimately: A car is after all a means of transportation.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
You use after all when you are mentioning an additional point that supports or helps explain what you have just said.
It had to be recognized, after all, that I was still a schoolboy.
I thought he might know where Sue is. After all, she is his wife.
You also use after all to say that something is true or may be true in spite of what had previously been thought.
Perhaps it isn't such a bad village after all.
I realised he was telling the truth after all.
Don't use 'after all' when you want to introduce a final point, question, or topic. Instead you use finally or lastly.
Finally I want to thank you all for coming.
Lastly I would like to ask about your future plans.
Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012