NICE-NELLY Meaning of NICE-NELLY in English [nice-nel.ly] adj, often cap 2d N [fr. the name Nelly] (1925) 1: marked by euphemism 2: prudish -- nice nelly n, often cap 2d N -- nice-nel.ly.ism n, often cap 2d N Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012