pundit (n.)

• abecedarian
• academician
• aficionado
• amateur
• authority
• bookman
• buff
• classicist
• clerk
• connoisseur
• critic
• dilettante
• docent
• doctor
• dominie
• don
• educationist
• educator
• expert
• fan
• fellow
• freak
• genius
• guide
• guru
• humanist
• instructor
• litterateur
• maestro
• master
• mastermind
• mentor
• mullah
• nut
• pedagogue
• philologist
• philologue
• philomath
• philosopher
• polymath
• preceptor
• professor
• rabbi
• sannyasi
• savant
• scholar
• scholastic
• schoolman
• schoolmaster
• schoolteacher
• specialist
• starets
• student
• teacher
• technician
• yogi