屋上屋を架す

おくじょうおくをかすokujouokuokasu

expression · godan verb

  1. to do something useless
  2. to gild the lily
  3. to gild refined gold
  4. to build a roof atop the roof

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences