LanguageTool Community

<< return to list of rules

Rule "hyphen in 'opt in/out'"

This is one of many errors that LanguageTool can detect.

Description: hyphen in 'opt in/out'
Message: It appears that a hyphen is missing in this expression.
Category: Grammar (ID: GRAMMAR)
Link: https://languagetool.org/insights/post/hyphen/#compound-adjectives-with-hyphens
Incorrect sentences
that this rule can detect:
  • The opt in functionality.
    Correction suggestion: opt-in
  • My opt out attempt wasn't working.
    Correction suggestion: opt-out
Correct sentences
for comparison:
  • My attempt to opt out failed.
ID: OPT_IN_HYPHEN [1]
Version: 6.6-SNAPSHOT (2024-11-24 22:33:09 +0100)