Emily Dickinson Lexicon
Definition for A-GAST', or A-GHAST'
A-GAST', or A-GHAST', a. [Qu. a contraction of agazed, or Goth. agis, Sax. egesa, horror. See Aghast and Gaze.]
Struck with terror, or astonishment; amazed; struck silent with horror. With shuddering horror pale and eyes agast. – Milton.
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