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Webster 1913 Edition

Adj.

Not appalled; not frightened; dauntless; undaunted.

Milton.

Adj.

Not appalled; not daunted; not impressed with fear.

With eyes erect and visage unappall'd.

unappalled ‎(comparative more unappalled, superlative most unappalled)

Not appalled or frightened; undaunted.
(Can we find and add a quotation of Milton to this entry?)