Siberian rhymes with:
iberian, liberian, berberian, iberian, liberian, algerian, assyrian, berberian, biospherian, criterion, derderian, hanoverian, hyperion, iberian, illyrian, liberian, nigerian, presbyterian, quirion, shakespearean, syrian, thraco-illyrian, valerian, zairian
Siberian sounds like:
sabourin, sabrina, saffran, saffron, safran, savarino, schiferon, schizophrenia, seaborn, seaborne, severin, severini, severino, severn, shafran, shakespearean, shifrin, shopworn, sophronia, soprano, sovran, sparano, spearman, sperm, sporn, sprain, spreeman, spreen, spurn, subramanian, suffern, superhuman, superman, superwoman, superwomen, supreme, sybron, szafran