From Longman Dictionary of Contemporary Englisha withering look/remark etca withering look/remark etcCRITICIZEa look, remark etc that makes someone feel stupid, embarrassed, or lose confidence → withering
Examples from the Corpus
a withering look/remark etc• The dark-haired vibrancer caught him staring and gave him a withering look.• Charles turned abruptly round and gave his wife a withering look as reporters homed in on the pair. 