Having the quality of combining or blending things together; tending to or capable of causing amalgamation.
From amalgamate plus the suffix -ive (indicating 'tending to' or 'capable of'). The suffix pattern follows standard English adjective formation from verbs.
Musicians and composers often have 'amalgamative' styles—like how Stevie Wonder blended classical, funk, soul, and rock into completely new genres—and these boundary-breaking artists often create the most innovative and influential music because they're not confined by traditional categories.
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