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

• self-starter
• self-starters
• self-sterile
• self-sterility
• self-studies
• self-study
• self-styled
• self-subdued
• self-substantial
• Sinic
• sinical
• sinicise
• sinicised
• sinicises
• sinicising
• Sinicism
• sinicize
• sinicized
• sinicizes
• sinicizing
• sining
• sinister
• sinisterities
• sinisterity
• sinisterly