Added 10 October 2026 caustically adverb Categories: Describing WordsRare Words adverb ! Definition from WordNet 3.1, Princeton University. More about caustically at Wordnik → Where our words come from → In a caustic vitriolic manner. he addressed her caustically Related Words: vitriolicallycausticlycorrosivelyacridlyscathinglyacidicallyacerblyinvectivelycastrativelytoxicallyrancidlycathartically Back to today's word