10. master hand, expert, proficient. See - master hand.
11. boy, young man or fellow, Scot. chield, youth, adolescent, teenager, teen or teener, minor, hobbledehoy; male child, Inf. kid, youngster, stripling, lad, cub, sprig, schoolboy, whippersnapper; son, sonny, cadet, scion.
-adj. 12. chief, principal, main, predominant, cardinal, prime; leading, most important, dominating, commanding, controlling, ruling, directing.
13. masterful, masterly, skillful, skilled. See - masterly (def. 1).
-v. 14. conquer, vanquish, triumph over, defeat, beat, Inf. whip; overmaster, overpower, overwhelm, overthrow, take over; prostrate, break, smash, crush, flatten, bring [s.o.] to his knees; subdue, subjugate, subject, subordinate, enslave, enthrall; beat down, put down, quash, quell, stamp out; repress, suppress, keep down.
15. (all of animals) break, break in, tame, domesticate.
16. dominate, rule, control, govern; command, order around, dictate to, boss around, tell [s.o.] what to do; direct, manage, call the shots or plays,, run the show, rule the roost, lay down the law; lord it over, domineer, be overbearing, rule with a high or iron hand, tyrannize; ride herd on, ride roughshod over, intimidate, browbeat, bully.
17. learn thoroughly, acquire skill in, become proficient in, make oneself a master of, know inside out or backwards and forwards.
masterful, adj. 1. commanding, controlling, dominating, ruling, bossy; authoritative, powerful, domineering, oppressive; overbearing, arrogant, haughty, lordly; peremptory, imperative, demanding; imperious, dictatorial, tyrannical, despotic, despotical, autocratic, autocratical, arbitrary, high-handed, self-willed.
2. preeminent, expert, skillful. See - masterly (def. 1).
master hand, n. 1. expert, master, ace, proficient, adept, mavin, Chiefly Brit. Inf. dab hand, Brit. Dial. dabster; maestro, virtuoso, talent, genius, prodigy, standout; Inf. wizard, Inf. whiz, U.S. Sl. crackerjack, Chiefly Brit, crack, Sl. sharp, Sl. shark; professional, Inf. pro, journeyman, veteran, past master or mistress, old hand, old stager; specialist, authority, pundit, scholar; connoisseur, critic; (both of martial arts) black belt, dan.
2. expertness, expertise, mastery, skill, excellence; masterfulness, masterliness, skillfulness, proficiency, adeptness; knack, touch, finesse, address, ingenuity, genius, subtlety; dexterity, adroitness, facility, ease, felicity, deftness, handiness, ambidexterity.
masterly, adj. 1. supreme, consummate, matchless, peerless, expert, virtuosic; excellent, superior, preeminent, distinguished, top-flight, top-drawer, first-rate, ace, Inf. topnotch, Inf. crack, Sl. crackerjack, Inf. whiz-bang, Brit. Sl. whizzo; finished, polished, admirable, accomplished, Fr. au fait; proficient, adept, apt; adroit, deft, dexterous, gifted, talented; skillful, skilled, artistic, workmanlike. -adv. 2. expertly, masterfully, excellently, preeminently; proficiently, adeptly, aptly, admirably; skillfully, dexterously, adroitly, deftly.
mastermind, v. 1. conceive, contrive, think up, come up with, have the bright idea, Inf. hatch, Inf. dream up; devise, frame, forge, plan, design, shape, form, mold, develop, work up; originate, innovate, initiate, found, establish, start, instigate, inaugurate, launch; create, author, invent, produce, generate, make; execute, carry [s.t.] out, move [s.t.] forward, engineer, manage, direct, guide, lead.