| changeless(stable, constant, enduring, lasting, perpetual) |
| constant(steady, stable, fixed, impassive, inflexible) |
| continual(stable, constant, enduring, lasting, perpetual) |
| diurnal(stable, constant, vast, enduring, lasting) |
| everlasting(stable, constant, vast, enduring, lasting) |
| fixed(steady, stable, constant, impassive, inflexible) |
| for keeps(expression, stable, constant, enduring, lasting) |
| forever(stable, constant, vast, enduring, lasting) |
| forever and a day(expression, stable, constant, vast, enduring) |
| immutable(steady, stable, fixed, impassive, stubborn) |
| imperishable(stable, constant, vast, enduring, lasting) |
| in for the long haul(expression, stable, constant, vast, enduring) |
| indestructible(stable, constant, enduring, lasting, perpetual) |
| invariable(stable, constant, enduring, lasting, perpetual) |
| long-lasting(stable, constant, enduring, lasting, perpetual) |
| perduring(stable, constant, vast, enduring, lasting) |
| perennial(stable, constant, enduring, lasting, perpetual) |
| persistent(stable, constant, enduring, lasting, perpetual) |
| set(steady, stable, fixed, impassive, inflexible) |
| set in stone(expression, idiom, fixed, impassive, stubborn) |