In a fearful manner; characterized by fear(adverb)
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Use "fearfully" in a sentence
"As he limped across the yard, she called fearfully, "He has that there gun of his'n with him all the timedo be careful!""
"Be it remembered that this document was prepared quite as much for German eyes as for the Ambassador's, and nothing gives a man standing and respect in the Teutonic mind as much as a name fearfully and wonderfully adorned."
"I raised myself slowly and fearfully from the earth, and at length I stood upright."