1.
business partner, client company, trading partner
A company or individual with whom one conducts business transactions. Can refer to clients, suppliers, or any party in a business relationship.
Common patterns
Compound of 取引 (business transaction) + 先 (destination/party). The 先 suffix is common in business vocabulary to indicate the other party: 連絡先 (contact), 届け先 (delivery destination), 仕入れ先 (supplier).
Usage
A core business vocabulary word. Used in workplace conversations, emails, and reports. 取引先 is broader than "client" — it encompasses any company you do business with, whether they buy from you or you buy from them.
Common collocations
Related Words
Related:
取引 (business transaction)
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仕入先 (supplier)
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先方 (the other party)
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得意先 (customer)
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提携先 (business partner)
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契約先 (contract partner)
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調達先 (supplier)
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受取先 (recipient)