The Collaborative International Dictionary of English v.0.48:
Progress \Pro*gress"\ (?; formerly pronounced like Progress,
n.), v. i. [imp. & p. p. Progressed; p. pr. & vb. n.
1. To make progress; to move forward in space; to continue
onward in course; to proceed; to advance; to go on; as,
railroads are progressing. "As his recovery progressed."
Let me wipe off this honorable dew,
That silverly doth progress on thy checks. --Shak.
They progress in that style in proportion as their
pieces are treated with contempt. --Washington.
The war had progressed for some time. --Marshall.
2. To make improvement; to advance. --Bayard.
If man progresses, art must progress too. --Caird.
Moby Thesaurus II by Grady Ward, 1.0:
64 Moby Thesaurus words for "progressing":
advancing, ambulant, ambulative, ambulatory, ameliorative,
bettering, bradytelic, circuit-riding, developing, evolutional,
evolutionist, evolutionistic, evolving, expeditionary, forward,
forward-looking, genetic, globe-girdling, globe-trotting, go-ahead,
going, horotelic, improving, itinerant, itinerary, journeying,
locomotive, looking up, maturational, maturative, maturing,
meliorative, mending, moving, mundivagant, on the lift,
on the mend, on tour, oncoming, ongoing, ontogenetic, onward,
passing, pedestrian, perambulating, perambulatory, peregrinative,
peregrine, peripatetic, phylogenetic, physiogenetic, pilgrimlike,
proceeding, progressive, strolling, tachytelic, touring, touristic,
touristy, traveling, trekking, unfolding, walking, wayfaring