say it: MA-stur
master is a noun, verb and adjective meaning "an artist of consummate skill". It carries 15 recorded senses.
an artist of consummate skill
“a master of the violin”
“one of the old masters”
directs the work of others
presiding officer of a school
an original creation (i.e., an audio recording) from which copies can be made
an officer who is licensed to command a merchant ship
someone who holds a master's degree from academic institution
an authority qualified to teach apprentices
key that secures entrance everywhere
be or become completely proficient or skilled in
“She mastered Japanese in less than two years”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for master come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.