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Boon
Something beneficial that is bestowed; blessing
Inimical
Injurious; unfriendly
Pernicious
Tending to cause death or serious injury; deadly
Bane
A cause of death, destruction, or ruin
Toxic
Poisonous; harmful
Salutary
Designed to effect an improvement; remedial
Panacea
A remedy for all diseases, evils, or difficulties
Adulterate
To make impure or inferior by adding extraneous, unusual, or improper ingredients.
Exorcise
To expel an evil spirit
Vitiate
To impair the value or quality of
Prone
Tending; inclined; lying face downward
Contingent
Dependent upon conditions not yet established; likely
Feasible
Capable of being accomplished; suitable; plausible
Presumably
By reasonable assumption; probably; likely
Preposterous
Contrary to nature or common sense; absurd
Implausible
Not valid, likely, or acceptable; difficult to believe.
Proclivity
A natural inclination or tendency
Eventuality
A possible event; possibility
Perchance
Perhaps; possibly
Inconceivable
Incapable of being imagined or comprehended
Protean
Readily taking on a different shape, form, or character
Evolve
To develop or achieve gradually; devise
Metamorphosis
A marked change in appearance, character, or function
Immutable
Not subject or susceptible to change
Modulate
It regulate, adjust, or adapt to a certain proportion; soften
Volatile
Changeable; fickle; explosive
Malleable
Capable of being altered or influenced
Sporadic
Occurring at irregular intervals; having no pattern or order
Inveterate
Firmly establish by having existed for a long time fixed in habit, custom, or practice
Transmute
To change from one form, nature, or state to another