Context: I recently left a comment on Area51 telling a user that their question is more suitable for X.SE since [that site] is focused on X and allied topics.

I'm sure I heard someone use that phrase during a public speaking session, but, according to Google, the only people that use it seem to be the Annual ASMS Conference on Mass Spectrometry and Allied Topics.

Q. Is that phrase considered valid, every-day English, or is it perhaps laden with Academick Connotations?

N.B. I could've used related topics but for some reason I like allied best.

closed as primarily opinion-based by FumbleFingers, tchrist, andy256, Chenmunka, anongoodnurse Feb 2 '15 at 20:54

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • I think you're right that it's mostly used in scholarly contexts. – Barmar Jan 31 '15 at 8:37
  • Not that it would be wrong in ordinary writing. It's certainly understandable. – Brian Hitchcock Jan 31 '15 at 8:47
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    There's nothing wrong using with allied topics in everyday speech or writing, though it's not something you'll often hear in casual or informal conversations. – Erik Kowal Jan 31 '15 at 8:51
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    Why would you consider allied a better fit in the context? – Kris Jan 31 '15 at 13:10
  • See also: Writing and Academia – Kris Jan 31 '15 at 13:13

Is “allied topics” a term reserved for the academia?


  • Firstly, the phrase happens to be rare, about 2,340 results on Google Search, against about 6,050,000 results for related topic.

  • Secondly, some taxonomical methods use the phrase pair Main Topic and Allied Topic(s), which necessitates the use of the phrase, at least in some academic writing.

I suggest treating the word pair as a phrase, not a term, except when used as in 'Secondly' above.

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