ANT: Obscure, uncertain, ambiguous, dubious, contingent, hypothetical, hazy, oracular, enigmatical, mystical.
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KEY: Category.
SYN: State, kind, predicament, condition, nature, order, mode, sort, class.
ANT: Essence, truth, being.
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KEY: Causality.
SYN: Eventuality, operativeness, potentiality, effectuality, productiveness, conduciveness.
ANT: Preventiveness, retardativeness, obstructiveness, counteractivity, unproductiveness, ineffectiveness, inoperativeness, barrenness.
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