careful
scholarly
absorbed
absorbed in
abstruse
academic
advised
aforethought
assiduous
attentive
autodidactic
bookish
booky
buried in
caught up in
civilized
college-bred
collegiate
considered
contemplating
contemplative
cultivated
cultured
deep
deliberate
designed
devoted
devoted to
devoted to studies
diligent
donnish
dryasdust
educated
encyclopedic
engaged
engrossed
engrossed in
erudite
graduate
immersed in
industrious
intent
intent on
involved
learned
lettered
literate
candid
considerate
devout
discreet
obedient
observant
pensive
reverent
sedate
thoughtful
tranquil