We don't have synonyms for ageeable yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are agreeable, amenable and seeable.
"These Frenchmen give unto the said captain of Calais a great sum of money, so that he will be but content and agreeable that they may enter into the said town. -- Hugh Latimer."
"These Frenchmen give unto the said captain of Calais a great sum of money, so that he will be but content and agreeable that they may enter into the said town. -- Hugh Latimer."