Dreadful
来自Big Physics
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wiktionary
From Middle English dredful, dredfull, dredeful (also dreful), equivalent to dread + -ful.
etymonline
dreadful (adj.)
early 13c., "full of dread or fear, timid," from dread (n.) + -ful. Meaning "causing dread, exciting terror" is from c. 1200; weakened sense of "very bad" is by 1680s. Related: Dreadfully; dreadfulness.
