| ongoing(adjective, continue) |
| overlong(adjective, slow, constant, tedious, late) |
| round-the-clock(adjective, continue, continual) |
| sempiternal(adjective, eternal, perpetuity) |
| straight(adjective, continuous, continual, nonstop) |
| sustained(adjective, slow, persistent, late, continuous) |
| unfathomable(adjective, constant, abundant, unrestrained, endless) |
| connected(adjective, steady, regular, persistent, constant) |
| deathless(adjective, constant, abundant, unrestrained, endless) |
| enormous(adjective, absolute, huge, vast, endless) |
| even(adjective, persistent, continuous, endless, relentless) |
| imperishable(adjective, perpetuity) |
| incomprehensible(adjective, complete, absolute, unrestrained, extensive) |
| interminate(adjective, free, continuous, endless, infinite) |
| lengthened(tedious, long, extended, length, drawn-out) |
| lingering(slow, late, protracted) |
| rambling(adjective, long-drawn-out) |
| regular(adjective, steady, stable, persistent, constant) |
| repetitive(adjective, continuous) |
| termless(adjective, infinite, infinity) |