1. By virtue of an office or position
   "the head of the department serves as an ex officio member of the board"

1. By virtue of position
   "the president sat on the committee ex officio"
   - by right of office

See also: official

Encyclopedia: Ex officio

• Walter Hess
• Walter John de la Mare
• Walter Lippmann
• Walter Mitty
• Walter Piston
• Walter Ralegh
• Walter Raleigh
• Walter Reed
• Walter Rudolf Hess
• Walter Scott
• Walter William Skeat
• Walther Hermann Nernst
• Walther Richard Rudolf Hess
• Walton
• waltz
• waltz around
• waltzer
• wamble
• Wampanoag
• wampee
• wampum
• wampumpeag
• wan
• Wanamaker
• wand