KEY: Pernicious.
SYN: Hurtful, harmful, noxious, deleterious, detrimental, destructive, deadly, injurious, baneful.
ANT: Beneficial, wholesome, innocuous, undetrimental, innocent, salutary.
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KEY: Perpendicular.
SYN: Vertical, upright, standing upright.
ANT: Horizontal.
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KEY: Perpetrate.
SYN: Commit.