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English definition of “caustic”

caustic

adjective     /ˈkɔːstɪk/
REMARK A caustic remark is extremely unkind and intended to upset or criticize someone.Unkind, cruel and unfeelingViolent or aggressiveTreating people or animals badlyInsults and abuseDisapproving and criticizingDamaging reputationCritical and uncomplimentary
SUBSTANCE Caustic chemicals can burn things.Types of chemicalSpecific chemicals, chemical compounds and gasesSubstances and structures in the body
(Definition of caustic adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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