postdate- to write on something a date that comes after the real date
postgraduate- a person who takes a college class after he or she has already graduated college
posthumous- occurring or continuing after death; usually related to a book that is published after the author has died
postindustrial- the time in society that came after the Industrial Revolution
postmark- a mark printed across a stamp after it is received by the post office
postmeridian- taking place after noon; p.m.
postmortem- occurring or done ager death; usually related to an examination of the body after it is dead
postpone- to do something at a time or date after it was originally planned
postproduction- the editing that is done after the movie, film, or idea has been taped
postscript- a comment, note, or thought written after the letter is finished; p.s.