prior knowledge (noun) anticipation: readiness; forethought
Sinonime: annihilative, baleful, baneful, calamitous, cataclysmic, catastrophic, crippling, damaging, deadly, deleterious, depleting, dire, draining, exhausting,
extravagant, fatal, fateful, harmful, hurtful, immoderate, impoverishing, injurious, murderous, noxious, pernicious, shattering, suicidal,
unfortunate,
wasteful, withering, wrackful
Antonime: advantageous, assisting,
beneficial, helpful