terminator (English)

Where does "terminator" come from?

The English noun 'terminator' is partly derived from the post-classical Latin 'terminator', appearing as early as the fifth century from the Latin verb 'terminō', and partly formed within English from 'terminate' combined with the agent suffix '-or'[1]. The underlying Latin verb 'terminō' means to define, limit, or end, originating from 'terminus' meaning an end or limit[4][5]. The specific modern sense of an intelligent android that kills humans comes after the 1984 film The Terminator[1].

Full etymology tree

terminator (English), 'Someone who terminates or ends something, especially (in later use) an assassin or exterminator.'
- derived terminator (Latin), 'he who sets bounds'
  - derived termino (Latin), 'to mark off (by boundaries), set bounds to; bound, limit'
    - derived terminus (Latin), 'a boundary, limit, end'
  - derived -tor (Latin), '-er; used to form masculine agent nouns from verbs'
- derived terminate (English), 'To end something, especially when left in an incomplete state.'
  - borrowed terminatus (Latin), 'marked off (by boundaries), bounded, limited'
    - derived termino (Latin), 'to mark off (by boundaries), set bounds to; bound, limit'
      - derived terminus (Latin), 'a boundary, limit, end'
    - derived -o (Latin), 'Used to form masculine nouns with various meanings:'
    - derived terminus (Latin), 'a boundary, limit, end'
- derived -or (English), 'Creates an agent noun, often from a verb, indicating a person or object (often machines or parts of them) that do the verb or part of speech with which they are formed.'

Ancestors

terminate (English)
-or (English)

Descendants and derived words

terminator pig (English)

Sources

Updated August 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris