Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
colourful is an adjective meaning "striking in variety and interest". It carries 2 recorded senses.
striking in variety and interest
“a colorful period of history”
“a colorful character”
“colorful language”
having much or varied color
“colorful autumn leaves”
Definitions, synonyms and semantic relations for colourful come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.