must exists

USAGE SUMMARY

"must exists" is not technically grammatically correct, and is not typically used in written English.
You could use the phrase "must exist" instead. For example, "It must exist somewhere in this universe."

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

9 human-written examples

There must exists a positive integer, if, then, which leads to (2.12).

Fixed Point Theory and Applications

Under the joint influences, there must exists a maximum value for IgG translocation with its concentration increasing.

Nanoscale Research Letters

As the nodes in a subnet must be connected so there must exists a communication path between them.

Complex Adaptive Systems Modeling

Pre/post-conditions (1) In the pre-condition, it is defined that initially there must exists actors in the subnet in which the earthquake is detected.

Complex Adaptive Systems Modeling

VState must be LSpeed or HSpeed for or, respectively.  . the VID must exists in NT table; the request must be consistent with the vehicle state.

EURASIP Journal on Wireless Communications and Networking

For Rules 11 to 14, two criteria are used to validate a received request: (1) the VID must exists in NT table;   (2) the request must be consistent with the vehicle state.

EURASIP Journal on Wireless Communications and Networking

Human-verified similar examples from authoritative sources

Similar Expressions

50 human-written examples

Since the cause is existent, the effect also must exist.

SEP

The rest, however, must exist.

The Economist

Group couples therapy: it must exist.

The New York Times - Books

Science must exist within the broader cultural and societal context.

The Guardian

If I think, I must exist — Cogito ergo sum.

The New Yorker

Expert writing Tips

Best practice

Always use the correct grammatical form "must exist" instead of "must exists". Remember that "must" is a modal verb and is always followed by the base form of the verb.

Common error

Avoid using the incorrect form "must exists". The modal verb "must" requires the base form of the verb, so the correct form is always "must exist", regardless of the subject.

Linguistic Context

The phrase "must exists" functions as a statement of necessity or logical implication regarding the existence of something. However, it is grammatically incorrect. As Ludwig AI points out, the correct form is "must exist".

Expression frequency: Uncommon

Frequent in

Science

66%

News & Media

34%

Formal & Business

0%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, while the phrase "must exists" appears in some sources, it is grammatically incorrect. The correct form is "must exist". Ludwig AI also indicates that it is not technically grammatically correct. Its intended meaning is to assert the necessity or logical certainty of something's existence. Although the phrase has been used in contexts such as science and news, writers should always use the grammatically correct form "must exist" to maintain clarity and credibility.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

must exist

Corrects the grammatical error by using the base form of the verb "exist".

has to exist

Replaces "must" with "has to" to express obligation or necessity regarding existence.

is required to exist

Uses a more formal and explicit phrasing to indicate a requirement for existence.

necessarily exists

Emphasizes the necessity of existence using the adverb "necessarily".

is bound to exist

Indicates a high probability or inevitability of existence.

is certain to exist

Expresses certainty about the existence of something.

should exist

Indicates an expectation or logical necessity for something to exist.

needs to exist

Emphasizes the need or requirement for something to exist.

is compelled to exist

Indicates that something is forced or driven to exist.

is destined to exist

Suggests that the existence of something is predetermined.

FAQs

What is the correct grammatical form: "must exist" or "must exists"?

The correct grammatical form is "must exist". The word "must" is a modal verb, and modal verbs are always followed by the base form of another verb. Therefore, "must exists" is grammatically incorrect.

When should I use "must exist" in a sentence?

Use "must exist" when you want to express that something is necessary or logically certain to exist. For example, "For the program to function correctly, certain files must exist".

What are some alternatives to saying "must exist"?

Alternatives include "has to exist", "is required to exist", or "necessarily exists". The best choice depends on the specific context and the nuance you want to convey. For instance, "necessarily exists" implies a logical necessity.

Is "must exist" formal or informal?

"must exist" is suitable for both formal and informal contexts. However, in very formal or scientific writing, phrases like "is required to exist" might be preferred for their explicitness.