Wave a red flag synonyms | phrases

Phrases with similar meaning for Wave a red flag

• give the high sign

  warn, caution that something may happen
• put one wise

  warn, caution that something may happen
• give fair warning

  caution that something may happen
• put on guard

  caution that something may happen
• put bug in ear
• give high sign
• tip-off
• give notice
• put on the alert
• tip the wink