forwarn or forewarn /fər- or för-wörnˈ/

To forbid

• horn-makers
• horn mercury
• horn-nut
• horn-nuts
• horn of plenty
• left bower
• left-click
• left-clicked
• left-clicking
• left-clicks
• lefte
• lefter
• leftest
• left face
• left-field
• left-fields
• left-footed
• left-footer
• left-footers
• left-hand
• left-hand drive
• left-handed
• left-handed compliment
• left-handedly
• left-handedness