[ mas-tuh-ree, mah-stuh- ]
/ ˈmæs tə ri, ˈmɑ stə- /

noun, plural mas·ter·ies for 1, 4.

command or grasp, as of a subject: a mastery of Italian.
superiority or victory: mastery over one's enemies.
the act of mastering.
expert skill or knowledge.
the state of being master; power of command or control.

Nearby words

  1. mastersinger,
  2. masterson,
  3. masterstroke,
  4. masterwork,
  5. masterwort,
  6. masthead,
  7. mastic,
  8. masticable,
  9. masticate,
  10. mastication

Origin of mastery

1175–1225; master + -y3; replacing Middle English maistrie < Old French

Related formsnon·mas·ter·y, noun, plural non·mas·ter·ies.pre·mas·ter·y, nounre·mas·ter·y, noun, plural re·mas·ter·ies. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mastery

British Dictionary definitions for mastery


/ (ˈmɑːstərɪ) /

noun plural -teries

full command or understanding of a subject
outstanding skill; expertise
the power of command; control
victory or superiority
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mastery



early 13c., mesterie, "condition of being a master," also "superiority, victory;" from Old French maistrie, from maistre "master" (see master (n.)). Meaning "intellectual command" (of a topic, etc.) is from 1660s.

Online Etymology Dictionary, © 2010 Douglas Harper