the GNU version of the Collaborative International Dictionary of English
adj. Incapable of being appeased or satisfied; unappeasable.
The Century Dictionary and Cyclopedia
Not to be appeased.
Word Usage
"He seemed to project those two shining knobs of temples of his into everything that went on and to brush his hair farther and farther back, until the very roots were almost ready to fly out of his head in inappeasable philanthropy."