Definition of lethologica in US English:

lethologica

noun

rare
  • The inability to remember a particular word or name.

    ‘he would grope for the words and he often apologized for his lethologica’

Origin

Early 20th century: irregularly from Greek lēthē ‘forgetfulness’ (see Lethe) + logos ‘word’, with the ending in -ica probably intended to distinguish the word from others in -logia denoting a subject of study (see -logy).

Pronunciation

lethologica

/ˌlēTHəˈläjəkə//ˌliθəˈlɑdʒəkə/