Use NSA as a label, then write the particular version you can offer. A useful profile explains whether you want a one-off or repeat meetings, how much contact suits you and when you are broadly available.
Write the intention in ordinary language
Instead of “NSA only, just ask,” try “Looking for casual chemistry, with no plan for a conventional relationship.” A reader can understand the intention without already knowing the abbreviation.
Add a positive description of what would work. A profile consisting entirely of exclusions leaves another person to invent the actual invitation.
Choose wording for one-off or repeat interest
For a single encounter: “Visiting Bristol this weekend and open to one meeting if we get on.” For recurring interest: “I’d enjoy one familiar connection and occasional repeat meetings while keeping our everyday lives separate.”
These sentences describe different offers. Do not copy the more flexible one to attract replies if you already know repeat contact is unavailable.
Add availability and a conversation opening
A broad area and rough pattern are enough: “Usually around London during the working week, with some free evenings.” Avoid an exact address or a detailed live timetable.
Finish with one detail someone can respond to, such as a real interest or the sort of conversation you enjoy. When the profile attracts a reply, confirm the important expectation before making a plan.