1. A logical refutation

Encyclopedia: Elenchus

• substratum
• substring
• substructure
• subsume
• subsumption
• subsurface
• subsystem
• subtenant
• subtend
• subterfuge
• subterminal
• subterranean
• subterraneous
• subtext
• subthalamic nucleus
• subthalamus
• subtile
• subtilin
• subtilise
• subtilize
• subtitle
• subtle
• subtleness
• subtlety
• subtly