scath ‧ ing /ˈskeɪðɪŋ/ BrE AmE adjective
[ Date: 1700-1800 ; Origin: scathe 'to harm' (12-20 centuries) , from Old Norse skatha ]
a scathing remark criticizes someone or something very severely
scathing attack/remark/comment etc
a scathing attack on the government’s planned tax increases
scathing about
He’s always been so scathing about psychiatrists.
—scathingly adverb