Our team decided to leave the legacy system alone—if it ain't broke, don't fix it.

I tried explaining the safety procedures three times, but as they say, you can't fix stupid.

When we discussed overhauling the app, she shrugged and said, if it ain't broken, don't fix it, so we left the core features unchanged.

Let's fix the roof while the sun is shining and reinforce the gutters before the rainy season.

The committee's fixednesses on procedural matters frustrated the reformers.

Her fixedness in adhering to the original plan made it difficult to adapt to new information.

She fixedly studied the diagram, refusing to look away until she understood every detail.