Synonyms of veteran

1 Syllable
gramps, vet, pro, wise, old
2 Syllables
eldest, soldiers, trooper, skillful, soldier, adept, kingfish, trained, elders, oldish, long-time, veter, skilled, versed, expert, sporter, old-time, troopers, steady, worldly
3 Syllables
hardened, old-timer, weathered, warhorse, war-horse, musketeers, capable, qualified, consultant, practical, gray-haired, long-serving, well-versed, practiced, inured, seasoned, technician, geriatric, technicians, musketeer, proficient, specialist
4 Syllables
paratroopers, golden-ager, experienced, exercised, battle-scarred, paratrooper, soldier-at-arms, disciplined
5 Syllables
sophisticated, cavalryperson, infantryperson