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1. Understood perfectly
   "had his algebra problems mastered"
   - down, down pat

1. Be or become completely proficient or skilled in
   "She mastered Japanese in less than two years"
   - get the hang
    
2. Get on top of; deal with successfully
   "He mastered his shyness"
   - overcome, get over, subdue, surmount
    
3. Have dominance or the power to defeat over
   "Her pain completely mastered her"; "The methods can master the problems"
   - dominate
    
4. Have a firm understanding or knowledge of; be on top of
   - control

See also: mastering, mastery, perfect

Type of: beat, beat out, command, control, crush, know, shell, trounce, vanquish

Encyclopedia: Master Master, The Master, of God