code red

7 synonyms and 2 antonyms for code red, grouped by meaning and by how common each one is.

Noun — The highest level of emergency alert, declared when a situation is critical and demands immediate action; in hospitals it commonly signals a fire, and in other organisations the most serious class of incident.

Synonyms

Everyday swaps

Common words most readers know — safe in any writing.

emergency crisis period

Rare, literary or technical

Precise, but they will stand out — check the sense before using one.

red alert all-hands emergency crisis mode time of the month

Synonyms by Meaning

1. noun

The highest level of emergency alert, declared when a situation is critical and demands immediate action; in hospitals it commonly signals a fire, and in other organisations the most serious class of incident.

“The ward went to code red the moment smoke was detected.”

red alert emergency crisis

Opposites

all clear code green

2. noun informal

Loosely, any situation treated as an all-hands crisis requiring everything else to be dropped.

“It is code red until the payment system is back up.”

all-hands emergency crisis mode

3. noun informal, euphemistic

In informal use among some speakers, a coded way of referring to menstruation.

“She texted code red and asked me to bring supplies.”

period time of the month

How to use code red

The word patterns that sound natural to a native speaker.

declare a code red go to code red code red alert a full code red

Neutral in emergency and clinical use; informal and often hyperbolic in everyday speech.

Etymology

From the colour-coded emergency alert systems used in hospitals and emergency services, in which red marks the most urgent category.

Full origin of code red →

Frequently asked questions

What does code red mean in a hospital?

In most hospital systems code red announces a fire or suspected fire, triggering evacuation and containment procedures. Codes are not fully standardised, so the exact meaning can differ between hospitals and countries — code blue for cardiac arrest is the most consistent across systems.

What is the difference between code red and code blue?

Code blue is a medical emergency for a specific patient, usually cardiac or respiratory arrest, and summons the resuscitation team. Code red is an environmental emergency affecting the building, most often fire. One is about a person, the other about the place.

Is code red used outside hospitals?

Widely. Weather services, air-quality agencies, militaries and companies all use it for their most severe alert level, and it has passed into ordinary speech for any all-out crisis.

People also searched

period emergency crisis

Nearby words

← Back to the full definition of code red