Of the mind or mental faculties: eminently capable of thinking or understanding, powerful. Of the memory: retentive.

Of personal attributes, actions, works, etc.: showing depth of insight or knowledge; marked by great learning.

Of a plan, view, thought, etc.: far-sighted; perceptive, insightful. Obsolete.

Of an action, composition, etc.: Showing cleverness, talent, or genius. Obsolete in general sense: see 3b.

Characterized by largeness, breadth, or comprehensiveness of views or sympathies.

Of the mind, etc.: Unusually large or comprehensive in grasp or aims.

Full of, exhibiting, characterized by, vigour or active force; powerful, strong. Of the soul, mind, etc.

Of a rough but strong or sturdy character.

Characterized by breadth of opinion or feeling; (also) characterized by liberal-mindedness; tolerant, unprejudiced, broad-minded. Cf. broad, adj. 11a.

Characterized by breadth of opinion or sentiment; liberal, catholic, tolerant, allowing wide limits to ‘orthodoxy’. (Cf. breadth, n. 2, Broad Church…

Resembling an ocean, ocean-like; of immense extent or magnitude; vast.

figurative. in depth, profoundly; with deep insight or penetration. See also in-depth adj. at in-, prefix1 affix 2.