desuetude (noun)

1. The old painting studio fell into desuetude after the artist's death, with brushes and canvases left untouched for years.

2. Their once passionate relationship gradually faded into desuetude, leaving them with a sense of emptiness and longing.

3. The comedian made a remark about a long-forgotten trend, mocking its desuetude and irrelevance in today's society.

4. The abandoned building stood as a testament to desuetude, with cracked windows and overgrown vines reclaiming the structure.