Definition of ex- in English:


Syllabification: ex-
(also e-)


  • 1Out; outside of: expand express
  • 2Up and away; upward: excel extol
  • 3Thoroughly: exacerbate excruciate
  • 4Removal or release: excommunicate exculpate expel
  • 5Forming verbs expressing inducement of a state: exasperate excite
  • 6Forming nouns (from titles of office, status, etc.) expressing a former state: ex-husband ex-convict


from Latin ex 'out of'.


Ex- is assimilated as ef- before f (as in effeminate). Exfiltrate and exfoliate and their derivatives are exceptions.

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