One can only claim that something is a success after it has been tried out or used.

(linguistics) A natural language with no proven genetic relationship to another language.

plural of Chatham Islands penguin

(often humorous) Even if a person is in his or her senior years, with gray hair, he or she can still have ambition and energy, especially sexual energy.

plural of hog island

(slang, US, derogatory) Any poor town or out-of-the-way place.

Much depends on the beginning of an endeavor.

(sometimes proscribed) Alternative form of the proof of the pudding is in the eating

A putatively Islamic form of fascism or authoritarianism; a Muslim theocracy.

The hint, suggestion etc. can be understood without further explanation.