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According to Wikipedia, the past tense (and past participle) of the verb to output is either output or outputted. Are these two forms entirely interchangeable? Or do they have certain nuance in meaning or context (e.g. in programming one of the forms is preferred)?

Instead of correct results, my program output/outputted garbage.

Which one should I choose? My logical sense tells me output is better because it derives from put, but intuitively I tend to use outputted when I speak and don't have time to think.

herisson
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2 Answers2

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Dictionary.com endorses both output and outputted. Ngrams and a Google search (238K vs. 22K) yields evidence of a definite preference for output. (Note: is output instead of was output yields similar results)

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Pronte
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Daniel
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    The question asks for the past tense of "output," instead of the past participle. The latter is used in passive voice. – L. F. Apr 21 '19 at 02:19
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    @L.F. yes, but if the result does not match then this would be the only verb in existence to have -ed in past tense with no ending for past participle... – Antti Haapala Jul 21 '19 at 08:32
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The word "output" is a noun, not a verb. I believe "outputting" is just an illiterate form of "to put out" or "to produce as output".

Tom
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    Please name a general-purpose English language dictionary that does not include an entry for output as a verb. – phenry Mar 25 '15 at 20:48
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    This answer is as smug as it is wrong http://www.macmillandictionary.com/dictionary/british/output_2 http://www.oxforddictionaries.com/definition/english/output – toniedzwiedz Jun 08 '16 at 10:11
  • @toniedzwiedz Both links now just go to company front pages. – hippietrail Nov 13 '23 at 10:04