keenly

As adverbs the difference between subtly and keenly

is that subtly is with subtleness, in a subtle manner with cleverness rather than brute force while keenly is in a keen manner.

As an adverb keenly

is in a keen manner.

As an adjective agile is

having the faculty of quick motion in the limbs; apt or ready to move; nimble; active; as, an agile boy; an agile tongue.

As an adverb keenly

is in a keen manner.

As an adjective undefined is

lacking a definition or value.

As adverbs the difference between acutely and keenly

is that acutely is in an acute manner while keenly is in a keen manner.

As an adverb keenly

is in a keen manner.

As an adjective keener is

(keen).

As a noun keener is

(dated) one who keens at a funeral.

Keenly is a related term of intensely.

As adverbs the difference between keenly and intensely

is that keenly is in a keen manner while intensely is in an intense manner.

As adverbs the difference between deeply and keenly

is that deeply is at depth, in a deep way while keenly is in a keen manner.

As adverbs the difference between keenly and strongly

is that keenly is in a keen manner while strongly is in a strong or powerful manner.

As adverbs the difference between rightly and keenly

is that rightly is aright, in a right manner, correctly, justifiably while keenly is in a keen manner.

As adverbs the difference between keenly and eagerly

is that keenly is in a keen manner while eagerly is in an eager manner.