Converting enum to string ?

Hi,
im trying to put the current enum value and use it as string. like -

enum buttons2 {Alef, Bet, Gimel, Dalet, …}


PlayerPrefs.SetString(“currentLetter”, buttons2);

Can anyone help please?

var btn : buttons2;
btn = buttons2.Alef;
PlayerPrefs.SetString (“currentLetter”, btn.ToString());