sanctum sanctorum/sangkʹtawrəm/ noun (pl sanctum sanctorums sancta sanctorum)

• subtle
• subtlety
• subtonic
• subtopia
• subtotal
• subtract
• subtraction
• subtrahend
• subtropic
• subtropical
• subtropics
• subulate
• subunit
• suburb
• suburban
• suburbanise
• suburbanite
• suburbanize
• suburbia
• subvention
• subversion
• subversive
• subvert
• subway
• subwoofer