How to say "companion" in Japanese

Choosing the right word
  • 相手あいてJLPT N3approx.Common
    nounThe person on the other side of an interaction or shared activity — a partner, opponent, or someone keeping you company; it frames the companion as the other party, not as a friend.
    あなたのダンスの相手あいてはだれですか。↗
    Who is your dance partner?
  • 友達ともだちJLPT N5approx.Common
    nounA friend — use it when 'companion' simply means a friend or buddy you are close to, not someone defined by a role or activity.
    犬いぬは人間にんげんの最もっとも親したしい友達ともだちである。↗
    Dogs are man's closest friends.
  • 仲間なかまJLPT N3approx.Common
    nounA comrade or mate — someone who belongs to the same group, team, or circle as you; it stresses shared belonging and camaraderie rather than one-to-one friendship.
    田中たなかさんは父ちちのつり仲間なかまの一人ひとりだ。↗
    Mr. Tanaka is one of my father's fishing companions.
  • 同士どうしJLPT N1approx.Common
    noun, noun (suffix)Really a way of saying 'mutual' or 'fellow' — that people share the same position or are each other's counterparts; on its own it is seldom the word you want for a companion.
    10代だいの友ともだち同士どうしが徹夜てつやでおしゃべりした。↗
    The teenage friends stayed up talking all night.
  • 供ともCommon
    noun, suru verb, transitive verbAn attendant or follower who accompanies someone — a member of a person's retinue or party; it implies attending on another rather than friendship, so it suits 'companion' only in that attendant sense.
    空港くうこうまでお伴ともしましょう。↗
    I'll accompany you to the airport.

Choose 相手 for the other party in a shared activity, 友達 for a friend, 仲間 for a comrade in the same group, 同士 for mutual or fellow rather than a companion, and 供 for an attendant or retinue member.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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