Verb

• S: (v) goggle, gape, gawp, gawk (look with amazement; look stupidly)
• S: (v) gape, yawn, yaw (be wide open) "the deep gaping canyon"

Adjective

• S: (adj) agape, gaping (with the mouth wide open as in wonder or awe) "the gaping audience"; "we stood there agape with wonder"; "with mouth agape"