| Answer | Crossword Clue |
|---|---|
| lingering | Lasting for a long time or slow to end |
| semipermanent | lasting or intended to last for a long time but not permanent |
| everlasting | Lasting forever or for a very long time |
| perennial | Lasting or existing for a long or apparently infinite time; enduring |
| protracted | Lasting for a long time or longer than expected or usual |
| aeonic | lasting for an immeasurably or indefinitely long period of time |
