The expressions in every respect and in all respects pose a recurring difficulty in writing. They both mean “completely, absolutely,” and both spellings are accepted by reference grammars. The question of singular or plural depends on the grammatical nature of the word “all” and the context of the sentence.
The grammatical role of “all” in these fixed expressions
The word “all” functions here as an indefinite determiner placed before the noun “respect.” In the singular, “all” means “each” or “any”: it refers to the totality in an abstract way, without isolating the elements one by one. In the plural, “all” emphasizes the multiplicity of the respects considered.
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This distinction is subtle, and that is precisely what makes the choice hesitant. In French, several fixed expressions with “all” allow both singular and plural without a real change in meaning: “from every side” and “from all sides,” “of every kind” and “of all kinds.” The expression “in every respect” belongs to this category where the language accepts both forms without prioritizing one over the other.
To find more information on Utile au Quotidien, the underlying grammatical logic remains the same: “all” in the singular encompasses the totality indivisibly, while “all” in the plural breaks it down into distinct elements.
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Singular or plural: which form to prefer according to the register
If both spellings are correct, they are not distributed identically according to the types of texts. The grammar Le Bon Usage (Grevisse and Goosse, 2018 edition) notes that “in every respect” is particularly frequent in formal language and in legal or academic texts, where it marks absolute conformity. This form is found in phrases like “in every respect compliant with regulatory provisions.”
The plural form “in all respects” is more dominant in general press and everyday language. Analyses conducted on the Frantext corpus and the INA archives show, over the period 2000-2024, a clear upward trend of “in all respects” in press texts, whereas the two forms were more balanced in the literature of the previous century.
What automatic correctors suggest
Recent correction tools like Antidote 11 and Le Robert Correcteur do not flag either form as incorrect. However, their behavior is revealing: in the examples and reformulations suggested, these software programs more often propose “in every respect” for a global judgment (for example, “in every respect remarkable”) and “in all respects” for detailed comparisons (for example, “similar in all respects to the previous version”).
This trend among correctors reflects a stylistic nuance rather than a firm rule. It confirms that the choice between singular and plural is more about register and intention than normative grammar.
Related expressions with “all”: the same rules apply
The fluctuation between singular and plural is not limited to “in every respect.” Several fixed phrases follow the same pattern and deserve to be grouped together to consolidate the understanding of the mechanism.
- “Of every kind” or “of all kinds”: the singular emphasizes overall diversity, while the plural emphasizes the variety of categories. Both are accepted.
- “In every kind” or “in all kinds”: same logic. The singular encompasses without detailing, while the plural implicitly enumerates.
- “From every side” or “from all sides”: the singular evokes a general direction, while the plural refers to the different directions taken separately.
- “In every respect” or “in all respects”: here, the plural form is significantly more common in contemporary usage, to the point that the singular may seem archaic.
The common point of all these expressions: “all” in the singular before a countable noun produces an effect of abstraction, while “all” in the plural brings it back to concrete elements. Neither option is incorrect, but the frequency of use may vary from one expression to another.
Correctly agreeing “all”: common pitfalls in writing
The difficulty with “all” is not limited to “in every respect.” This word changes its grammatical nature depending on its position in the sentence, and the most common errors stem from this versatility.
When “all” is an adverb (it then means “entirely”), it generally remains invariable: “she is all surprised.” The exception occurs before a feminine adjective starting with a consonant or a mute h: “she is all surprised,” “they are all ashamed.” This euphonic rule has nothing to do with grammatical logic, which makes it difficult to remember.
In “in every respect,” “all” is not an adverb but a determiner. Agreement is therefore made with the noun “respect”: singular with singular, plural with plural. The form “in every respects” (all in singular, respects in plural) is a mistake that is regularly encountered.
Three quick checks before validating
- If “respect” is plural, “all” must become “all.” The combination “in every respects” is always incorrect.
- If the sentence expresses global and abstract conformity (“compliant in every respect”), the singular works well.
- If the sentence compares specific elements (“identical in all respects to the original”), the plural seems more natural, without the singular being incorrect either.
Both spellings are correct, but the internal agreement must remain consistent. The real trap is not choosing between singular and plural; it’s mixing the two in the same expression.
Contemporary usage leans towards “in all respects” in the majority of everyday contexts. For an administrative, legal, or literary text, “in every respect” remains a perfectly legitimate choice. The only real mistake would be to write “in every respects” or “in all respect,” as these combinations break the grammatical coherence between the determiner and the noun.