Here's what rhymes with declaratum.
datum stratum substratum Words that almost rhyme with declaratum
madam satin madame fatten latin batten happen hadn cabin haben flatten macadam platen sadden madden imagine gladden tarmacadam chasm fathom phantom tantum sachem bantam handsome random maxim platinum amalgam ransom spasm tandem magnum plasm sanctum tantrum hansom talcum pablum phantasm transom gladsome sphagnum memorandum neoplasm nonrandom cytoplasm iconoclasm enthusiasm protoplasm