Seeming eternities

EONS

Think of vast stretches of geological time, often used to describe the age of Earth’s oldest rocks or the lifespan of stars.

"Seeming eternities" hints at long, almost endless stretches of time, which is exactly what "eons" represent. The word plays on the idea of something feeling like it lasts forever, even if it’s not literally infinite. In crosswords, "eons" is a go-to answer for clues about vast periods, blending both the literal and the exaggerated sense of time."