Compounds of 腐る

• 腐る
  (v5r) to rot
  to go bad
  to corrode
  (P)
• 気が腐る
  (exp,v5r) to feel dispirited
  to feel discouraged
• 威張り腐る
  (v5r) to throw one's weight around
  to be puffed up
• 真面目腐る
  (v5r,vi) to become extremely serious (in attitude)
  to look solemn
  to assume a solemn air