Crossword Dictionary

awestruck

awed, awestruck, awestricken - a 
having or showing a feeling of mixed reverence and respect and wonder and dread; "stood in awed silence before the shrine"; "in grim despair and awestruck wonder" 

wordplays

synonyms

amazed, astonished, astounded, bowled over, dumbfounded (also dumfounded), dumbstruck, flabbergasted, shocked, stunned, stupefied, thunderstruck

in a sentence

the crowds were awestruck by the aerial feats of the stunt pilots

awestruck by the majesty of the Sierra Nevada Mountains

They were awestruck by the sheer size of the project. 

merriam-webster

etymology 

also awestruck, "overwhelmed by reverential fear," 1630s (Milton), from awe (n.) + struck (see strike (v.)). Perhaps coined to cut a path between the contemporary senses of awesome ("reverential") and awful ("causing dread"). Awe-strike (v.) is not recorded until much later (1832), has always been rare, and is perhaps a back-formation.

etymonline