algorism /alˈgə-ri-zm/

1. The Arabic system of numeration
2. Arithmetic
3. An algorithm

• unforewarned
• unforfeited
• unforged
• unforgettable
• unforgettably
• unforgivable
• unforgiven
• unforgiveness
• unforgivenesses
• unforgiving
• unforgivingness
• unforgivingnesses
• unforgot
• unforgotten
• unform
• unformal
• unformalised
• unformalized
• unformatted
• unformed
• unformidable
• unforming
• unforms
• unformulated
• unforsaken