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Synset

be or become completely proficient or skilled in
<verb.cognition>   freq. cnt.: 4 freq. cnt.: 4

sample sentences

"She mastered Japanese in less than two years"

verb frames

Somebody ----s something

verb frames

Somebody ----s
Somebody ----s something
Somebody ----s PP
lexical pointers
derivationally related form
semantic pointers
hypernym
entailment