Faute de mieux is French and is defined as for lack of something better.
(adverb)An example of faute de mieux used as an adverb is in the following sentence: "He headed west faute de mieux," which means he headed west to find something better.
See faute de mieux in Webster's New World College Dictionary
Origin: Fr
See faute de mieux in American Heritage Dictionary 4
adverb
Origin:
Origin: French
Origin: : faute, lack
Origin: + de, of
Origin: + mieux, better
.