9-Letter Words Containing: O,N,T,I,A,C

• crested ill-smelling South American bird whose young have claws on the first and second digits of the wings

• (sometimes followed by `of') having or showing knowledge or understanding or realization or perception

• of or relating to taxonomy

• administer narcotics to

• a low or downcast state

• any of various compounds that are added to gasoline to reduce engine knocking

• suppressing or eliminating engine knock in combustion engines

• a shape that curves or bends inward

• the property possessed by a concave shape

• act of demanding or levying by force or authority