1. nice Nelly - Noun
2. nice Nelly - Adjective
nice Nelly (plural nice Nellies)
A prudish or excessively modest person.
nice-nelly (comparative more nice-nelly, superlative most nice-nelly)
Alternative form of nice-Nelly
Prudish or excessively modest.
Characterized by euphemism; euphemistic.
Source: en.wiktionary.orgnice-nelly