相手（あいて、aite）
- partner / opponent

The Japanese word 相手, pronounced あいて (aite), primarily means "the other person," "partner," "opponent," "the person you are talking to," or "the other party involved." It refers to the individual or group of individuals who are in a relationship, interaction, or competition with you. It implies a degree of mutuality or interaction. The meaning can shift slightly based on context, but the core idea of someone being involved in the situation remains constant.

⚫︎相手は誰ですか？ Translation: Who is the other person? / Who is the other party? ⚫︎ 彼は試合の相手に勝ちました。 Translation: He won against his opponent in the match. ⚫︎ 私は相手の意見を聞きました。 Translation: I listened to the other person's opinion.

⚫︎ Use 相手 when you are referring to the other person or people involved in a situation. ⚫︎ This can be in various contexts such as conversation, sports, business, or any other kind of interaction. ⚫︎ It's a common and versatile word. ⚫︎ It is appropriate to use 相手 in both formal and informal settings, depending on the overall tone of the conversation.

⚫︎ The word 相手 is most commonly written using the kanji 相手. ⚫︎ The reading, あいて, is always written in hiragana. ⚫︎ No other ways to write the word 相手 are commonly used. ⚫︎ The okurigana (送りがな) doesn't change.

⚫︎ 人（ひと - person) ⚫︎ 相手方（あいてかた - the other party) - more formal. ⚫︎ 仲間（なかま - comrade, companion) - depending on context, can be a synonym. ⚫︎ 敵（てき - enemy, opponent) - when referring to an opponent in a competition or conflict.

⚫︎ In many situations, there isn't a direct antonym because 相手 refers to the other person. ⚫︎ However, one could consider the individual who *is not* 相手 as the opposite (i.e. "me" versus the 相手). ⚫︎ 自分（じぶん - oneself) or 私（わたし - I, me)

私はそのイベントで初めて相手と会いました。 ・Translation: I met the other person for the first time at that event. ・Explanation: This sentence describes meeting a person (the 相手) for the first time.

相手の提案について、もう少し詳しく説明してください。 ・Translation: Please explain the other party's proposal in a little more detail. ・Explanation: This is a request for further clarification on the other person's proposal.

The word 相手 is derived from the word 相（あい - together, mutual) and 手（て - hand, person). The literal meaning can be understood as "the person who interacts with one's hand" or "the person who is on the same side as one’s hand". The meaning evolved to represent the other party or person involved in a mutual relationship or action.