adverb/aˌθeɾbaˈmente/
sourly, bitterly
Etymology tree Proto-Indo-European *h₂eḱ- Proto-Indo-European *-rós Proto-Indo-European *h₂eḱrós Proto-Italic *akris Proto-Indo-European *dʰeh₁- Proto-Indo-European *-dʰh₁-os Proto-Italic *-iðos Proto-Italic *akriðos Latin acerbusbor. Spanish acerbo Proto-Indo-European *men- Proto-Indo-European *-tis Proto-Indo-European *méntis Proto-Italic *mentis Latin mēns Old Spanish -mente Spanish -mente Spanish acerbamente From acerbo + -mente.