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English definition of “toxic”


adjective uk   /ˈtɒk.sɪk/ us    /ˈtɑːk-/

toxic adjective (POISONOUS)

B2 poisonous: toxic waste/chemicals/effluentPoisoning and allergy

toxic adjective (UNPLEASANT)

informal very unpleasant or unacceptableSerious and unpleasantNot attractive to look atInformal words for badDifficult situations and unpleasant experiencesAccidents and disasters informal causing you a lot of harm and unhappiness over a long period of time: toxic parents a toxic relationshipMaking people sad, shocked and upsetDangerous and harmful
(Definition of toxic from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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