X mark

noun

A symbol composed of two perpendicular lines (✗), especially when representing negation or lack of verification.

Opposite
checkmarkO mark
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Meanings

nounX mark (plural X marks)

plural X marks

  1. A symbol composed of two perpendicular lines (✗), especially when representing negation or lack of verification.

Synonyms & antonyms

Opposite
checkmarkO mark
Cite this entry
APA

X mark. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/X%20mark

MLA

“X mark.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/X%20mark. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “X mark,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/X%20mark.

Source: X mark on Wiktionary, CC BY-SA 4.0.