Webster’s Revised Unabridged Dictionary · 1913
Prithee
Prith′ee (prĭt͟h′ē), interj. A corruption of pray thee; as, I prithee; generally used without I. Shak.
What was that scream for, I prithee? L'Estrange.
Prithee, tell me, Dimple-chin. E. C. Stedman.