adverb/ˌletalˈmente/
lethally
Etymology tree Latin lētum Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Latin lētālisbor. Spanish letal Proto-Indo-European *men- Proto-Indo-European *-tis Proto-Indo-European *méntis Proto-Italic *mentis Latin mēns Old Spanish -mente Spanish -mente Spanish letalmente From letal + -mente.