Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
charitableness is a noun meaning "generosity as manifested by practicing charity (as for the poor or unfortunate)". It carries one recorded sense.
generosity as manifested by practicing charity (as for the poor or unfortunate)
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 charitableness come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.