A person who emphasizes emotion, acts emotionally, or advocates for the expression of feelings.
From emotion + -ist (suffix for a person who practices or advocates something). The -ist suffix historically created terms for practitioners, believers, or prominent examples of a quality or field.
An emotionist would be someone who puts feelings first, which is different from an 'emotional person'—the -ist suffix makes it sound like a philosophical position or professional approach, similar to how a 'rationalist' advocates for reason.
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