Splenic rhymes with:
hellenic, anthropogenic, bennick, brennecke, calisthenic, carcinogenic, deneke, denike, eugenic, fenech, hallucinogenic, hellenic, henneke, hennick, jaenicke, krenek, krenik, orogenic, pathogenic, penick, pennick, photogenic, psychogenic, renick, rennick, schizophrenic, telegenic, transgenic, vennick
Splenic sounds like:
sapling, saplings, scuffling, sephlon's, shoveling, shuffling, sibling, siblings, spalink, spelling, spelling's, spellings, spellman's, spelunk, spelunks, spilling, spoiling, squabbling, supplying, swiveling