forwarn or forewarn /fər- or för-wörnˈ/

To forbid

• phototropy
• phototube
• phototubes
• phototype
• phototyped
• phototypes
• phototypesetter
• phototypesetters
• phototypesetting
• phototypic
• phototypies
• phototyping
• phototypy
• photovoltaic
• photovoltaic cell
• photovoltaics
• photoxylography
• photozincograph
• photozincographs
• photozincography
• phots
• phr
• phrasal
• phrasal verb
• phrasal verbs