The term 'Whiny One' can be described by three crossword solutions: Puler (5 letters), Sniveler (8 letters), and Bigbaby (7 letters). Puler is a term used to describe someone who complains or whines in a childish manner. Sniveler is a term used to describe someone who whines or complains in a weak, pitiful way. Bigbaby is a term used to describe someone who behaves like a baby, often whining or complaining about things. All three terms are used to describe someone who is overly whiny or complains too much.