Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
hidden subject
Grammar usage guide and real-world examplesUSAGE SUMMARY
"hidden subject" is a correct and usable phrase in written English.
You can use it to refer to the subject of a sentence that is not explicitly stated. For example: "The car needs to be washed." In this sentence, the hidden subject is "you" - it is implied that the person being addressed needs to wash the car.
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(7)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
6 human-written examples
Sarah Saffian claims that the representation of adoption on television is progressive in its broaching of a previously hidden subject ["When the Search for Birth Parents Is a Search for Self," March 12].
News & Media
Sex was a big hidden subject.
News & Media
The hidden subject of "The Italian Straw Hat" is how much the movies had changed in the three decades since then, changes Clair doesn't entirely approve of.
News & Media
In 1966, on the occasion of a Louis Lumière retrospective, Jean-Luc Godard delivered a speech in praise of Henri Langlois, the founder of the Cinémathèque Française — a hidden subject of "Hugo" — and said, "People say: Lumière is documentary, and Mèliès, fantasy….
News & Media
Despite these findings, child maltreatment has remained a taboo and hidden subject in many Asian countries like China.
A challenge here is that differences in the population genetic structure, attributable to confounding factors such as the ethnicity or ancestry of the subjects, may result in highly heterogeneous datasets with a number of hidden subject sub-groups, which may associate with divergent disease phenotypes and therefore cause an increased false-positive rates [ 50].
Science
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
After the food items were hidden, subjects could choose one of them either after 5 min or 1 h.
Science
After the food was hidden, subjects were allowed to choose one of these items either after a 5-min or 1-h retention interval (RI).
Science
This is so both for people whose impairments are immediately observable and to those whose impairments are hidden, but subject to exposure by a temporary change in appearance, e.g., a person with epilepsy who has a seizure in public (Schneider and Conrad 1985).
Science
T0 scores were hidden from subjects when re-rating their ADLs at T1 and T2.
The jars are hidden and subjects are presented with a predetermined sequence of beads and asked when they are certain which jar the beads are being drawn from.
Science
Expert writing Tips
Best practice
When using "hidden subject", ensure the context provides enough clues for the audience to infer the subject accurately. Overly obscuring the subject can lead to confusion.
Common error
Avoid using "hidden subject" as a crutch to mask responsibility or avoid directness. Sometimes, explicitly stating the subject improves clarity and accountability.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "hidden subject" primarily functions as a noun phrase, often acting as a complement or appositive, modifying another noun. As indicated by Ludwig, it refers to a subject that is implied rather than explicitly stated.
Frequent in
News & Media
40%
Science
40%
Formal & Business
20%
Less common in
Wiki
0%
Encyclopedias
0%
Academia
0%
Ludwig's WRAP-UP
The phrase "hidden subject" refers to an implied or unstated topic, primarily functioning as a noun phrase. As indicated by Ludwig, it is grammatically correct and usable, though its frequency is rare. The phrase appears in varied contexts, including News & Media, Science, and Formal & Business settings. When using "hidden subject", it's important to ensure the context allows the audience to infer the subject accurately. Considering these insights, it's essential to use "hidden subject" judiciously to maintain clarity and impact.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
unstated topic
Focuses on the lack of explicit statement of the topic.
covert theme
Highlights the concealed nature of the theme.
implicit theme
Emphasizes the implied nature of the theme.
underlying subject
Suggests a subject beneath the surface.
tacit topic
Implies a topic understood without being expressed.
unspoken subject
Emphasizes the subject's lack of verbalization.
veiled subject
Highlights the obscured or disguised nature of the subject.
latent topic
Suggests a topic that is present but not yet active or developed.
subtext
Refers to the implicit meaning or theme that is not explicitly addressed.
unacknowledged theme
Focuses on the lack of recognition of the theme.
FAQs
How can I effectively use "hidden subject" in my writing?
Use "hidden subject" when you want to imply a topic without explicitly stating it, relying on context and reader inference. It's effective when the unstated subject is subtly present but not the primary focus.
What are some alternatives to using "hidden subject"?
Depending on the context, you could use alternatives such as "unstated topic", "covert theme", or "implicit theme".
Is it always appropriate to use a "hidden subject" in a sentence?
No, using a "hidden subject" can sometimes lead to ambiguity. It's important to ensure that the context provides sufficient clues for the reader to understand the implied subject. Clarity should always be prioritized.
What's the difference between a "hidden subject" and an "underlying theme"?
While both relate to implicit meanings, a "hidden subject" refers to an unstated actor or topic in a specific sentence or situation, whereas an "underlying theme" is a more general, overarching idea or message that is not explicitly stated but can be inferred from the text or situation.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested