based on or subject to individual discretion or preference or sometimes impulse or caprice; "an arbitrary decision"; "the arbitrary rule of a dictator"; "an arbitrary penalty"; "of arbitrary size and shape"; "an arbitrary choice"; "arbitrary division of the group into halves"
the fusion of originally different inflected forms (resulting in a reduction in the use of inflections)
the union (or attempted fusion) of different systems of thought or belief (especially in religion or philosophy); "a syncretism of material and immaterial theories"