noun
gilding the lily; adding redundant things
A yojijukugo meaning to do something unnecessary or to add something superfluous, often making things worse. Literally 'building a roof on top of a roof'. Used in formal or literary contexts.
See also: 屋上屋を架す
その提案は屋上架屋で、むしろ混乱を招いた。
That proposal was gilding the lily; it only caused confusion.
彼の説明は屋上架屋の感がある。
His explanation feels like adding redundant things.