master

Strongest matches

adept, experienced, skilled, skillful

Strong matches

ace, crack, crackerjack

Weak matches

masterly, proficient

Strongest match

leading

Strong matches

ascendant, chief, controlling, grand, great, major, original, overbearing, predominate, prime, principal, sovereign

Weak matches

foremost, paramount, predominant, preponderant, prevalent, regnant, supreme

Strongest matches

administrator, boss, commander, director, guru, instructor, judge, manager, owner, ruler, teacher

Strong matches

captain, chief, chieftain, commandant, conqueror, controller, employer, general, governor, guide, head, lord, matriarch, overlord, overseer, patriarch, pedagogue, preceptor, principal, pro, skipper, superintendent, supervisor, swami, taskmaster, tutor, wheel

Weak matches

commanding officer, head person, schoolmaster/mistress, spiritual leader, top dog

Strongest matches

artist, authority, connoisseur, doctor, genius, guru, professional, scientist

Strong matches

ace, adept, artiste, buff, champion, conqueror, doyen, doyenne, maestro, maven, pro, pundit, sage, savant, shark, victor, virtuoso, whiz, winner, wizard

Weak matches

old hand, old pro, past master, prima donna, proficient, real pro, whiz-bang

Strongest matches

comprehend, grasp, understand

Strong matches

acquire, cram, grind, study, swamp

Weak matches

beat the game, beat the system, bone up, bury yourself in, excel in, gain mastery, get down cold, get down pat, get hold of, get the hang of, get the knack of, hit the books, learn the ropes, megastudy, pick up