algorism /alˈgə-ri-zm/

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

• unreason
• unreasonable
• unreasonableness
• unreasonably
• unreasoned
• unreasoning
• unreasoningly
• unreasons
• unreave
• unreaved
• unreaves
• unreaving
• unrebated
• unrebuked
• unrecallable
• unrecalled
• unrecalling
• unrecapturable
• unreceipted
• unreceived
• unreceptive
• unreciprocated
• unrecked
• unreckonable
• unreckoned