Word.ws English Dictionary

jack off

jack off verb: to masturbate. Also the nonstandard spelling of jackoff.

Verb

jack off (third-person singular simple present jacks off, present participle jacking off, simple past and past participle jacked off)

  1. (Canada, US, ambitransitive, derogatory, reflexive, slang) To masturbate.
    • Two boys jacking off under railroad bridge. The train shakes through their bodies, ejaculates them, fades with distant whistle.1962 [1959], William S. Burroughs, Naked Lunch, New York: Grove Press, page 81
  2. (Canada, US, derogatory, slang, vulgar) To stimulate or please oneself in an unproductive or idle way.

Also used as

jack off is also the nonstandard spelling of jackoff.

Synonyms of jack off

28 more synonymsFewer synonyms

All synonyms of jack off

Forms of jack off

Verb
third-person singular presentjacks off
present participlejacking off
past participlejacked off
pastjacked off
alternative abbreviationJ-O
alternative abbreviationJ/O
Noun
pluraljack offs

Words formed from jack off

Questions about jack off

What does jack off mean?
Jack off means to masturbate.
What part of speech is jack off?
Jack off is a verb.
What is the past tense of jack off?
The past tense of jack off is jacked off.

Words near jack off in the dictionary

  1. jack of all trades, master of none
  2. jack of clubs
  3. jack of diamonds
  4. jack of plate
  5. jack of spades
  6. jack off
  7. jack offs
  8. Jack out of doors
  9. jack pine
  10. jack pines
  11. jack plane

Source and license

Adapted from Wiktionary: jack off (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-jack off.wav.

Cite this entry: “jack off.” Word.ws, https://word.ws/jack_off. Based on Wiktionary, CC BY-SA 4.0.