manqué • \mahng-KAY (the “ng” is not pronounced, but the preceding vowel is nasalized)\ • adjective

: short of or frustrated in the fulfillment of one’s aspirations or talents — used postpositively

Example Sentence:
Barbara is very capable real estate agent, but unless she figures out to close a few more deals, she’ll always be a broker manqué.

Did you know?
The etymology of “manqué” is likely to vex left-handers. English speakers picked up “manqué” directly from French more than two centuries ago, and it ultimately comes from Latin “manco,” meaning “having a crippled hand.” But in between the Latin and French portions of this word’s history came the Italian word “manco,” which means both “lacking” and “left-handed.”