"mastered" in the verb sense
1. master, get the hang
be or become completely proficient or skilled in
"She mastered Japanese in less than two years"
2. overcome, get over, subdue, surmount, master
get on top of deal with successfully
"He overcame his shyness"
3. dominate, master
have dominance or the power to defeat over
"Her pain completely mastered her"
"The methods can master the problems"
4. master, control
have a firm understanding or knowledge of be on top of
"Do you control these data?"
"mastered" in the adjective sense
1. down, down pat, mastered
"had his algebra problems down"
Source: WordNet® (An amazing lexical database of English)
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