Synonyms for Peregrine (same or very similar meaning)
WordNet sense 1 ((of groups of people) tending to travel and change settlements frequently):
mobile, nomadic, roving, wandering, mobileWordNet sense 2 (not settled or established):
unsettledWordNet sense 3 (a widely distributed falcon formerly used in falconry):
Falco peregrinus, peregrine falconFrom the ODE community, based on WordNetadd/edit