malapropism /malˈə-pro-pi-zm/

1. The misapplication of words without mispronunciation, from Mrs Malaprop in Sheridan's play, The Rivals, who uses words malapropos
2. A word so used

• dulse
• dulses
• duly
• duma
• dumaist
• dumaists
• dumas
• dumb
• dumb-ass
• dumb-asses
• dumb-bell
• dumb-bells
• dumb blonde
• dumb blondes
• dumb-cane
• dumb-cluck
• dumb-clucks
• dumb down
• dumbed
• dumber
• dumbest
• dumbfound
• dumbfounded
• dumbfounder
• dumbfoundered