nelivaptan in English dictionary nelivaptan Meanings and definitions of "nelivaptan" A certain vaptan drug originally proposed for the treatment of anxiety and depression but whose development was halted in 2008. noun A certain vaptan drug originally proposed for the treatment of anxiety and depression but whose development was halted in 2008. more Grammar and declension of nelivaptan nelivaptan ( uncountable) nelivaptan (uncountable) more Sample sentences with "nelivaptan" Declension Stem Try again Available translations Serbian Serbo Croatian Authors