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scathing is an adjective meaning "marked by harshly abusive criticism". It carries one recorded sense.
marked by harshly abusive criticism
“his scathing remarks about silly lady novelists”
“her vituperative railing”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for scathing come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.