The name Bette is a girl's name of Hebrew origin. Bette and is often added to lists like Nicknames for Elizabeth and discussed in our forums with posts like "Love, Like, Lose... Name Game- GIRLS".
From the experts:
Pronounced a la Bette (Betty) Davis or Bette (Bet) Midler, a twentieth-century relic. Though if the equally vintage Betty comes back, Bette may be close behind.