Combust

"S"s stacked then outward and up to "5"s

Affixes

+ed — Combusted
+able, +ity — Combustibility
+able — Combustible
+ing — Combusting
+ion — Combustion
+ion, +s — Combustions
+s — Combusts
in+, +able — Incombustible
non+, +able — Noncombustible
pre+, +ion — Precombustion