What is the opposite of more unhazardous?

Need antonyms for more unhazardous? Here's a list of opposite words from our thesaurus that you can use instead.

Contexts Opposite of comparative for harmful, often in a subtle or unexpected way Opposite of comparative for capable of causing harm, injury or death due to the presence of poison Opposite of comparative for dangerous or involving risks Opposite of comparative for requiring or involving physical effort Adjective ▲ Opposite of comparative for harmful, often in a subtle or unexpected way adverser harmfuller badder eviller wickeder deadlier direr unhealthier riskier dicier painfuller violenter fiercer feller more deleterious more detrimental more damaging more dangerous more injurious more pernicious more baleful more baneful more hurtful more inimical more noxious more ruinous more destructive more nocuous more prejudicial more unfavorableUS more unfavourableUK more disadvantageous more ill more negative more nocent more undesirable more unfortunate more mischievous more calamitous more disastrous more lethal more maleficent more toxic more crippling more cancerous more unwholesome more catastrophic more cataclysmic more devastating more hazardous more malign more malignant more poisonous more unsafe more malefic more counterproductive more malicious more sinister more malevolent more noisome more suicidal more venomous more pestiferous more annihilative more extirpative more wreckful more wrackful more pestilential more lethiferous more disturbing more perilous more precarious more threatening more parlous more subversive more incendiary more murderous more corrosive more critical more virulent more menacing more sinful more insalubrious more cataclysmal more brutal more damning more fateful more devastative more annihilatory more savage more cutthroat more mortal more erosive more consumptive “Waste in landfills decays in physical, chemical, and biochemical processes that may eventually render it environmentally harmless.” Adjective ▲ Opposite of comparative for capable of causing harm, injury or death due to the presence of poison deadlier harmfuller more toxic more poisonous more venomous more noxious more pestilential more virulent more baneful more destructive more lethal more pestiferous more dangerous more infective more injurious more malignant more mortal more pernicious more poisoned more unsafe more contaminated more corrupt more peccant more septic more toxicant more mephitic more viperous “These plastics eventually break down into harmless products, but only after up to several hundred years.” Adjective ▲ Opposite of comparative for dangerous or involving risks awkwarder riskier rockier seriouser chancier dicier graver iffier stickier thornier trickier dodgier gnarlier hairier shakier higher-risk recklesser uglier hotter more dangerous more perilous more precarious more treacherous more vulnerable more delicate more hazardous more parlous more grievous more threatening more unsafe more unsound more unstable more insecure more unpredictable more taxing more touch-and-go more uncertain more daredevil more death-defying more breakneck more unchancy more compromisable more daring more dangersome more tottery more alarming more venturesome “The Terminator assured John Connor that it would be safe to follow him.” Adjective ▲ Opposite of comparative for requiring or involving physical effort difficulter harder heavier ruggeder stiffer tougher severer more energetic more strenuous more gruelingUS more vigorous more arduous more formidable more gruellingUK more laborious more punishing more rigorous more taxing more demanding more exhausting more tiring more toilsome more backbreaking more challenging more exacting more toilful more operose more high-energy “I quit weights training and picked up yoga because I wanted a benign activity.” Find more words! 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Use our Antonym Finder Nearby Words more unhazy more unhealthful more unhealthy more unheard-of more unheeded more unheedful more unharmful more unharmed more unhappily more unhandsome more unhampered more unhallowed