Formation of feminine adjective

1. To make the masculine singular adjective feminine, the general rule is to add -e.

   e.g. grand, grande = big, tall


2. If the masculine singular adjective already ends in -e, there is no change
   in the feminine form.


   e.g. jeune, jeune = young


3. If the masculine singular adjective ends in -en, add -ne to make it feminine.


   indien     indienne

4. If the masculine singular adjective ends in –f remove –f and add –ve to make it feminine.


   e.g. actif, active = active


5. If the masculine singular adjective ends in –eux, remove -x and add –se to make it
   feminine.


   e.g. heureux, heureuse = happy 


6. If the masculine singular adjective ends in -er,remove -er and add -ère to make it feminine.
                
   e.g. Cher, chère = dear