Frontiers

Definition of Frontiers
Noun

1. frontier (a wilderness at the edge of a settled area of a country) "the individualism of the frontier in Andrew Jackson's day"

2. frontier (an international boundary or the area (often fortified) immediately inside the boundary)

3. frontier (an undeveloped field of study; a topic inviting research and development) "he worked at the frontier of brain science"

Find words for Frontiers
Adjectives

narrow; indefensible; dangerous; maritime; panding; constraining.