The most common and most likely answer to this crossword clue is the 7 letter word CODERED , but the solution may also be REDALERT which is one of the most recent solution (2007 in Newsday).
Serious warning crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| CODERED | 40 % | 7 | 
| REDALERT | 40 % | 8 | 
| MAMMOTHCAVEAT | 20 % | 13 | 
Words with a meaning similar to the clue: Serious warning
These words may or may not be a possible solution to this crosswords clue.- admonition
 - alarm
 - animadversion
 - attention
 - danger
 - dire
 - focus
 - heed
 - light
 - menace
 - omen
 - threat
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution
More clues leading to the result CODERED
- Dire security warning
 - Emergency situation
 - Official emergency level
 - Official emergency status
 - *Official emergency status
 - Security warning
 - Alert status
 - Emergency indicator
 - Serious warning
 - Emergency status
 
More clues leading to the result REDALERT
- Danger signal
 - Top-level warning
 - State of readiness
 - Warning to the crew, on "Star Trek"
 - Critical period
 - State of high alarm
 - State of emergency
 - Grave warning
 - State of maximum readiness
 - Ready-for-the-worst status