Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
motivative is an adjective meaning "impelling to action". It carries one recorded sense.
impelling to action
“it may well be that ethical language has primarily a motivative function”
“motive pleas”
“motivating arguments”
Definitions, synonyms and semantic relations for motivative come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.