In French, most adjectives modify based on the GENDER and NUMBER (singular or plural) of the noun they describe. However, a few invariable adjectives never change regardless of the number or gender of the noun. When describing a feminine noun, many adjectives add '-e' at the end. However, if the adjective already ends with a silent \\"e,\\" there is no need to add one. Also, a few adjectives add '-s' at the end when describing a plural noun. However, the addition is not required if the adjective already ends in 's.'