1) Ambitious 2) French word used in English 3) Unsuccessful 4) Would-be 1) Ambitious 
Manqué (feminine, manquée) is a term used in reference to a person who has failed to live up to a specific expectation or ambition. It is usually used in combination with a profession: for example, a career civil servant with political prowess who nonetheless never attained political office might be described as a `politician manqué`. It can .....
[adj] - unfilled or frustrated in realizing an ambition
would-be(a) adjective unfulfilled or frustrated in realizing an ambition
unfulfilled or frustrated in realizing an ambition