Eyes wide open in awe or surprise

adjective

1. Full of intense interest or excitement eager

   "“… That was the year the Twilight movie was going to come out, and the kids were agog with all things vampire. …”"

2. Wide open agape

   "His talent [as a painter] is so enormous that you look at his surfaces with your mouth agog at the near-impossibility of it all."

3. Full of wonder or surprise astonished

   "Jones … fired a strike to a waiting receiver that left his coaches agog."

4. Full of lively activity bustling

   "In the evenings … the streets … were agog with life."

5. Abundantly filled replete

   "His lyrics are agog with images that manage to be poetic and earthy at the same time …"

adverb

1. In an excited or astonished manner

   "… he posed for photographs with rugby fans of all ages, before playing with the 39 youths who were staring agog at their idol."