Fiendish meaning

fēndĭsh
Of, relating to, or suggestive of a fiend; diabolical.
adjective
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Extremely bad, disagreeable, or difficult.

A fiendish blizzard; a fiendish problem.

adjective
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Of or like a fiend; devilish; inhumanly wicked or cruel.
adjective
2
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Extremely vexatious or difficult.
adjective
2
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Extremely wicked or cruel.
adjective
1
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Sinister; evil; conniving; in the manner of a fiend.
adjective
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