This is the 13948th most frequent German word.
frohen
The German word "frohen" means "happy" or "joyful" (used in contexts like "frohen Mutes" - "of happy mood").
Used as an adjective describing 'Geburtstag' to convey a cheerful or joyous state.
Ich wünsche dir einen frohen Geburtstag.
I wish you a happy birthday.
Used as part of the phrase 'frohen Herzens' to describe the manner in which an action is performed, expressing joy.
Die Kinder singen frohen Herzens ein Lied.
The children sing a song with a joyful heart.
Used as an adjective describing 'Gedanken' to express positivity or happiness.