The Collaborative International Dictionary of English v.0.48:

Abawed \Ab*awed"\ ([a^]b*[add]d"), p. p. [Perh. p. p. of a verb
   fr. OF. abaubir to frighten, disconcert, fr. L. ad + balbus
   stammering.]
   Astonished; abashed. [Obs.] --Chaucer.
   [1913 Webster] Abaxial