This article examines the verb τιθαιβώσσω, a Homeric hapax legomenon of unknown meaning and etymology: it reviews its use in Hellenistic poetry and strives to provide a contextually plausible meaning for the verb (‘to sting’), as well as for the related adjective θιβρός (‘stinging, mordant, piquant’). It argues that τιθαιβώσσω is etymologically related to Latin fīgere ‘insert, pierce’, fībula ‘pin’, Lithuanian díegti ‘to poke, sting’, and Tocharian B tsākā- ‘to bite’.