forwarn or forewarn /fər- or för-wörnˈ/

To forbid

• unilaterally
• unilingual
• uniliteral
• unillumed
• unilluminated
• unilluminating
• unillumined
• unillustrated
• unilobar
• unilobed
• unilobular
• unilocular
• unimaginable
• unimaginableness
• unimaginably
• unimaginative
• unimaginatively
• unimaginativeness
• unimagined
• unimbued
• unimmortal
• unimolecular
• unimpaired
• unimparted
• unimpassioned