fiendly

adjective fiend·ly \-dlē, -dli\

Definition of fiendly

-er/-est

archaic

  1. :  of, relating to, or befitting a fiend :  fiendish

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Origin and Etymology of fiendly

Middle English feendly, fiendly, from Old English fēondlic, fīendlic, from fēond, fīend fiend + -lic -ly


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