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

• hilar
• hilarious
• hilariously
• hilarities
• hilarity
• Hilary term
• hilch
• hilched
• hilches
• hilching
• hild
• Hildebrandic
• Hildebrandism
• hilding
• hildings
• hili
• hill
• hill and dale
• hillbillies
• hillbilly
• hill-digger
• hill-diggers
• hilled
• hillfolk
• hill-fort