not for hire
1. Not available to be used by someone else in exchange for money. Sorry, but the digital assets I've created are not for hire. Our military is not and never will be for hire by a foreign power.
2. Of a taxi, not available to pick up new customers. A: "Excuse me, could you take us to the airport, please?" B: "Sorry, I'm not for hire. Just waiting to pick up a customer."
not for hire
[of a taxi] not available to take new passengers. The taxi was going to pick someone up at a nearby hotel and was not for hire. The taxi had a lighted sign that said it was not for hire.