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x Synonyms

Another word for x

Choosing another word for x depends on context, so the 13 synonyms and similar words below are separated across 5 exact definitions and ranked by match strength.
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• noun (Context 1)

The twenty-fourth letter of the modern English alphabet.

Usage Example

"The word 'xylophone' begins with the letter ex."

Strongest
ex

• noun (Context 2)

A symbol used in algebra and mathematics to represent an unknown quantity or first variable, or by extension any unknown or unnamed person, factor, or thing.

Usage Example

"The students were asked to solve the quadratic equation for unknown."

Strongest
unknown
Strong
variable

• noun (Context 3)

A cross-shaped mark or figure formed by two intersecting lines, often used to indicate a specific location on a map, a choice on a ballot, a kiss at the end of a letter, or a signature made by an illiterate person.

Usage Example

"Please put an cross in the box next to your preferred candidate."

Strongest
cross
Strong
saltire
mark

• noun (Context 4)

The Roman numeral representing the number ten.

Usage Example

"Chapter ten of the textbook covers the history of the Roman Empire."

Strongest
ten

• verb (Context 5)

To cancel, obliterate, or cross out with a series of x's, or to mark with an x-shaped symbol.

Usage Example

"She cross out'd out the mistake on the typed form before submitting it."

Strongest
cross out
strike out
Strong
obliterate
cancel
delete
efface

Opposites of x

The opposite of x shifts depending on context. Common opposites include:

constant
See all opposites of x

Cite this Entry


Wordmom. (2026). Synonyms for X. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/x
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