Origin of mordaciousfrom Classical Latin mordax (gen. mordacis), biting from base of mordere, to bite: see mordant and -ous
- Given to biting; biting.
- Caustic; sarcastic.
Origin of mordaciousLatin mordāx mordāc- ( from mordēre to bite ; see mer- in Indo-European roots.) -ious
(comparative more mordacious, superlative most mordacious)
From Latin mordax (“given to biting, corrosive") (from mordere (“to bite, sting")) + -ious.