the feminine form of the Frenchwordmerveilleux, meaning wonderful, marvelous. In the Frenchlanguage all nouns have a gender, they are either masculine or feminine. A modifier used with a noun has to be of the same gender. The gender may change the spelling and pronunciation of the word. For example, the feminine form of merveilleux is merveilleuse. If you were to say in French "A wonderful mother" (mother being feminine) you would use the feminine form of the modifier, merveilleuse. If you were to say "A wonderful father" (father being masculine), you would use the masculine form of the modifier, merveilleux.(French) wonderful; marvelous.