Other hyponyms of expert include
ace,
adept,
champion,
genius,
hotshot,
maven,
mavin,
sensation,
star,
superstar,
virtuoso,
whiz,
whizz,
wiz,
wizard,
agronomist,
all-rounder,
analyst,
analyst,
anatomist,
antiquarian,
antiquary,
archaist,
arbiter,
supreme authority,
archer,
bowman,
authority,
black belt,
cabalist,
kabbalist,
calculator,
computer,
estimator,
figurer,
reckoner,
climatologist,
computer expert,
computer guru,
cosmetologist,
efficiency engineer,
efficiency expert,
exegete,
genealogist,
geographer,
horticulturist,
plantsman,
investigator,
jurist,
legal expert,
lapidarist,
lapidary,
logician,
logistician,
mnemonist,
mythologist,
nerd,
commentator,
observer,
out-and-outer,
parliamentarian,
past master,
prosthetist,
pteridologist,
guide,
pathfinder,
scout,
shark,
shooter,
shot,
specialiser,
specialist,
specializer,
talent,
technician,
technocrat,
healer,
therapist,
old-timer,
old hand,
old stager,
oldtimer,
stager,
veteran,
warhorse.