What do the lines say? There is no image so I can't help
Antony , Octavius and Lepidus
Duplicity has largely negative connotations as the word is associated with being deceitful or "double-dealing" this could mean making a deal and then backing out at a later date or saying that you will do one thing and then later do something different.
I believe it is dry because of the word desert and deserts are dry. Acrid also means in the dictionary bitter or harsh.