specialist (n.)
- adept
- aficionado
- amateur
- anesthesiologist
- artist
- artiste
- authority
- broker
- buff
- cardiologist
- chiropodist
- connoisseur
- critic
- dealer
- dermatologist
- dilettante
- expert
- fan
- feature
- freak
- geriatrician
- gerontologist
- gynecologist
- immunologist
- internist
- jobber
- limited
- maestro
- master
- neurologist
- nut
- obstetrician
- oculist
- ophthalmologist
- orthopedist
- otolaryngologist
- otologist
- pathologist
- pediatrician
- pediatrist
- podiatrist
- professional
- psychiatrist
- pundit
- radiologist
- savant
- scholar
- serologist
- stockbroker
- stockjobber
- technical
- technician
