loose for me is “loos” or “lewss” with an emphasis on making the “s” sound like “s”, versus lose sounding like “looze” or “lewz” that have a “z” sound at the end.

which is interesting for sure since “loser” still has the Z sound (mostly), and to make something less tight you make it “looser” with an S sound.

loose /luːs/

eg There were some loose wires hanging out of the wall.

lose /luːz/

eg At least 600 staff will lose their jobs if the factory closes.