coeffeoffe coffincoin coinfinite conceitive conceiveof concention concoction concoctive confection confective confeoffee conficient confiction connection connective connectnit connexxion connivence contection contention contentive contextive conticinio continence continente convection convective convenient convention conviction convictive convincent convincive convivence ecovention ecteninion efficience ex-convict ex-officio extinction extinctive fennec-fox fiveofiveo fivetonine foetotoxic fontenotte iffinitive inconcinne infinition infinitive infinitivo intinction ioninenine nevinniven nineoneone ninetofive non-finite noncontent nonfiction nontotient octonionic one-on-one one-to-one toe-to-toe vincentite vincentive vincetoxic vincetoxin vivificent