• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Home of English Grammar
  • Home
  • Course
  • Exercises
  • Grammar Rules
  • Matches
  • Posts
  • Tools
    • Grammar Checker
    • Very Replacer
    • Word Counter
  • Vocabulary Lists
  • Archives
    • Social Media Posts
    • Writing Guides
  • Join free

100 Best Synonyms for “Warn”

August 5, 2026

100 Best Synonyms for

No. Item Definition
1. admonish warn or rebuke firmly
2. advise tell someone to be careful
3. alarm make aware of danger
4. alert notify of possible danger
5. announce make known formally
6. anticipate expect and warn about
7. apprise inform someone officially
8. avert prevent by timely warning
9. berate scold harshly
10. broadcast spread a warning widely
11. call contact to warn
12. caution advise care or restraint
13. chase off drive away by warning
14. check stop or restrain cautionarily
15. circulate spread a warning among people
16. command give an authoritative warning
17. communicate convey a warning message
18. convey make a warning known
19. counsel advise carefully
20. curb restrain through warning or control
21. declare state a warning firmly
22. deliver give a warning formally
23. detect notice and signal danger
24. deter discourage by warning or fear
25. discourage advise against doing something
26. disseminate spread information widely
27. dissuade persuade someone not to act
28. document record a warning officially
29. draw attention to make someone notice danger
30. email warn by email
31. emphasize give special importance to
32. enjoin instruct or command formally
33. expostulate reason earnestly against action
34. fend off keep away through warning
35. flag point out as concerning
36. forecast predict future conditions
37. forestall prevent by acting early
38. foretell predict as a warning
39. forewarn warn in advance
40. give notice formally warn or inform
41. guide advise on proper action
42. head off prevent by early warning
43. highlight emphasize a possible problem
44. identify point out a risk
45. indicate show as a warning sign
46. inform give important notice
47. instruct tell someone formally
48. intimidate frighten with threats
49. issue send out an official warning
50. label identify with a warning
51. lambaste criticize harshly
52. lecture scold at length
53. mark identify as risky
54. menace threaten with danger
55. mention bring up as cautionary information
56. message send a warning electronically
57. moralize warn with moral judgments
58. note mention as a warning
59. notify inform about something important
60. object state opposition as warning
61. oppose resist and warn against
62. page contact with an urgent alert
63. point out draw attention to danger
64. post publish a warning notice
65. press strongly urge someone
66. prevent stop by warning beforehand
67. proclaim announce publicly and strongly
68. publicize make a warning widely known
69. publish make a warning public
70. put on notice officially warn beforehand
71. put wise inform about hidden danger
72. radio send a warning by radio
73. raise the alarm warn publicly of danger
74. record formally note a warning
75. red-flag mark as a serious concern
76. register record or note formally
77. relay pass on a warning
78. remind prompt someone to remember caution
79. restrain hold back with warning
80. rouse bring to alert attention
81. say express a warning
82. send transmit a warning
83. serve notice give a formal warning
84. shoo away drive off with warning
85. signal indicate possible danger
86. sound the alarm warn others of danger
87. spot notice and point out risk
88. stress emphasize strongly
89. tag mark as needing caution
90. telephone warn by phone
91. tell give a warning message
92. text warn by text message
93. threaten warn of possible punishment
94. tip off give a secret warning
95. underline emphasize as important
96. underscore emphasize a warning point
97. upbraid criticize severely
98. urge strongly advise action
99. wise up make someone aware
100. write send a written warning

Improve your English grammar, vocabulary and writing

We take you step by step from beginner to advanced, even if you struggled with English at school or have always had trouble remembering the rules.

  • 10 modules, 105 lessons and 688 questions
  • Just log in and learn anytime and anywhere
  • Your progress is saved in your account
  • Download the 2026 Grammar Guide (PDF)
Join free

Already have an account? Sign in

See what’s in the course

Primary Sidebar

2.4M761.4K165.8K

Free 2026 Grammar Guide

  • Download Grammar Guide (PDF)
  • Online grammar course, A1 to C2
  • Weekly exercises and vocabulary
  • Join over 3 million English learners

We respect your privacy. Unsubscribe anytime.

Already have an account? Sign in

Grammar Checker - Try Now

Latest Posts

  • 100 Best Synonyms for “Unsatisfied” October 18, 2026
  • 100 Best Synonyms for “Routine” October 18, 2026
  • “Impact” has been a verb for centuries October 18, 2026
  • 100 Best Synonyms for “Consistently” October 18, 2026
  • Pal vs. buddy vs. mate vs. friend vs. companion vs. confidant(e) October 18, 2026
  • 100 Best Synonyms for “Powerless” October 18, 2026
  • Research Translation Language Exercise October 18, 2026
  • Delusion vs. illusion: How to choose the right word October 18, 2026
  • 100 Best Synonyms for “Unresponsive” October 18, 2026
  • 100 Best Synonyms for “Rooted” October 18, 2026
Home of English Grammar

Free English grammar exercises, rules and vocabulary lists, with new exercises every week. Join the leading English grammar site with over 3 million followers.

Join free

Learn

  • Exercises
  • Matches
  • Grammar rules
  • Vocabulary lists
  • Writing guides
  • Online tools

More

  • Top social media posts
  • Various posts
  • Contact

Account

  • Join free
  • Grammar Course
  • Free grammar guide (PDF)

Copyright © 2026 EnglishGrammar.org

  • Disclaimer
  • Privacy policy
  • Terms
  • Sitemap