* Happy: *Heureux* (masculine) or *Heureuse* (feminine)
* Dear: *Cher* (masculine) or *Chère* (feminine)
Important Note:
* In French, adjectives agree in gender with the noun they modify. So you'll need to use the masculine form "Heureux" or "Cher" if referring to a male person or a masculine noun, and the feminine form "Heureuse" or "Chère" if referring to a female person or a feminine noun.