lethologica The inability to recall a word or the right word. Related 'sleep' units: dorm-; hypno-; narco-; oneiro- (dream); somni-; sopor-. Etymologically related 'forget, forgetfulness' word families: aletho-; oblivio-. Related 'memory, remember' word families: memor-;... Found on http://www.wordinfo.info/words/index/info/view_unit/1176/