forwarn or forewarn /fər- or för-wörnˈ/

To forbid

• sand trap
• sand traps
• sand wasp
• sand wasps
• sand wedge
• sand wedges
• sandwich
• sandwich boards
• sandwich construction
• sandwich constructions
• sandwich course
• sandwich courses
• sandwiched
• sandwiches
• sandwiching
• sandwich man
• sandwich men
• sandwich technique
• sandwich techniques
• sandwich tern
• sandwich terns
• sandworm
• sandworms
• sandwort
• sandworts