I'm inserting a single Greek word into a LaTeX document being compiled with pdflatex so I can't really use unicode input.
After several hours of searching I finally found the easy way to do what I want to do (I am not always skilled at searching) but I still need to figure out how to make the correct diacritic mark.
This is what I have in my preamble related to the Greek word:
What I want to typeset has a different breathing mark over the leading upsilon:
ὑποκριτής
Subtle difference but different than I have, I just can't find where the diacritics are documented. Obviously the apostrophe I am using is for a different breathing mark (and correct for the eta)