Deeply or seriously thoughtful.
Broody; incubating eggs by sitting on them.
A spell of brooding; the time when someone broods.
Given to thought, or to the examination of subjects by contemplation; contemplative.
Favorable to study; suitable for thought and contemplation
Planned with study; deliberate; studied.
Dedicated to study; devoted to the acquisition of knowledge from books
Earnest in endeavors; attentive; diligent