noun, noun, used as a suffix
decision; arrangement; rule; agreement
Noun or suffix from 決める. As a standalone noun it often means a decided internal rule or settled point; as a suffix it forms compounds for fixing terms, prices, positions, and similar arrangements. In some contexts 決まり, 取り決め, or 決定 may sound more standard or explicit.
これは部署内の決めなので、全員で守ってください。
This is a rule within the department, so everyone should follow it.
商品の値決めを誤ると、利益が出ない。
If you get the product pricing wrong, you will not make a profit.
月極めの駐車場を借りている。
I rent a parking space on a monthly contract.
A more common everyday noun for a rule, convention, or settled decision; 決め is shorter and often appears in compounds or in wording about internal decisions.
Refers more explicitly to a negotiated agreement or arrangement between parties; 決め can be broader and less formal.
A more formal noun for an official decision or determination; 決め is more compact and can function as a suffix in compounds such as 値決め.
Nominalized stem きめ of 決める, meaning to decide, fix, or settle. The 極め spelling is a attested variant associated with fixing or settling terms, but the modern standard spelling for this word is 決め.