Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
ornateness is a noun meaning "high-flown style; excessive use of verbal ornamentation". It carries 2 recorded senses.
high-flown style; excessive use of verbal ornamentation
“the grandiosity of his prose”
“an excessive ornateness of language”
an ornate appearance; being elaborately (even excessively) decorated
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for ornateness come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.