Into that grave, it seemed to him, was going something unreplaceable.
"The Tempering"
Charles Neville Buck
If she were being murdered she would be saying silently, while the knife went in, 'What an attractive creature, what an unreplaceable personage they are putting an end to!
"The Woman With The Fan"
Robert Hichens
Such trees are unreplaceable.
"A Country Doctor and Selected Stories and Sketches"
Sarah Orne Jewett