| True |
| e, e.g. |
| Perpetual |
| Continual |
| Unvarying |
| Unwavering |
| Invariable |
| Unchanging |
| Unremitting |
| Everlasting |
| Not changing |
| Unchangeable |
| Never varying |
| Never changing |
| Pi, for example |
| It stays the same |
| Physics class value |
| . . . ___ faithful |
| Like the speed of light |
| M. Kennedy's "The ___ Nymph |