Having the power or quality of captivating; tending to attract and hold attention; deeply interesting or charming.
From captivate plus the adjective-forming suffix -ive, which creates adjectives describing qualities that tend to produce a certain effect.
The suffix -ive is fascinating because it transforms a verb (captivate) into an adjective that describes the inherent power of something to produce that effect—it's not just charming, it's captivative.
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