A person who accompanies another; someone who goes along with or keeps company with someone else.
From accompany + -ier suffix (variant of -er meaning 'one who'), creating a noun for someone who performs the action of accompanying.
This is a delightfully old word that's mostly disappeared—we'd say 'companion' or 'travel companion' today, but accompanier captures something specific: the active role of the person doing the accompanying.
The -er suffix historically defaults to male when applied to role nouns; 'accompanier' lacks the gendered -ist/-ess distinction present in more standardized terms.
Use 'accompanist' (gender-neutral standard term) instead; if needed, pair with pronouns or use 'accompanier who identifies as...'
["accompanist","musical companion","ensemble member"]
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