Synonyms of frontier

1 Syllable

bound, march, brink

2 Syllables

edge, backwoods, verge, limit, edged, outpost

3 Syllables

boundary, borderland, confines, boundaries, timberland, hinterland, remotest, colonial, lineament, remoter, abuttals, lineation, abuttal

4 Syllables

borderline, extremities, extremity, god-knows-where, perimeter

7 Syllables

prerevolutionary