Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
ungenerous is an adjective meaning "lacking in magnanimity". It carries 2 recorded senses.
lacking in magnanimity
“it seems ungenerous to end this review of a splendid work of scholarship on a critical note”
“a meanspirited man unwilling to forgive”
unwilling to spend (money, time, resources, etc.)
“she practices economy without being stingy”
“an ungenerous response to the appeal for funds”
Definitions, synonyms and semantic relations for ungenerous come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.