abuse-disabuse advise-disadvise calescent-incalescent candescent-incandescent claim-disclaim color-discolor flammable-inflammable genius-ingenius habited-inhabited habitable-inhabitable heritable-inheritable illusionary-disillusionary limit-delimit lineate-delineate loosen-unloosen merge-immerge nude-denude passive-impassive prove-disprove ravel-unravel rupture-disrupture scribe-inscribe section-dissection sever-dissever spoil-despoil valuable-invaluable
