I really like this word that I discovered today via wordsmith.org!
manque (mang-KAY) adjective
Unfulfilled in realization of one's potential or ambition.
[From French manqué, past participle of manquer (to lack), from Italian
mancare, from manco (lacking, defective), from Latin mancus (maimed,
having a crippled hand). Ultimately from Indo-European root man- (hand)
that's also the source of manage, maintain, maneuver, manufacture,
manuscript, and command.]