Red

red flag

Meaning: a sign of a particular issue requiring attention.

Example: United, American, and Delta airlines suspended all flights to China. This was a red flag as the coronavirus wreaked havoc on the airline industry. Read on

red zone

Meaning: any geographical area that is thought to be dangerous or threatening, usually as a consequence of political or military activity.

Example: The alley behind the schoolyard is effectively a "red zone," since that is where all of the bullies hang out. Read on

red book

Meaning: any document or publication, which is bound in red and serves as an official collection of rules, regulations, laws, or legal principles.

Example: any document or publication, which is bound in red and serves as an official collection of rules, regulations, laws, or legal principles. Read on

red tape

Meaning: over excessive or time-consuming rules and bureaucracy that hinder progress

Example: She could have finished the project last week, but it was impossible to cut through all the red tape. Read on

in the red

Meaning: more money going out than coming in

Example: If your bank account goes in the red, the bank will charge you for every transaction. Read on

red-handed

Meaning: doing or about to do something illegal or wrong

Example: They caught him red-handed with his fingerprints all over the murder weapon. Read on

red herring

Meaning: something irrelevant that distracts you from something important

Example: The new law is just a red herring meant to draw our attention away from the issues regarding education. Read on

paint the town red

Meaning: to celebrate and have a wild time

Example: I can't wait to go out with my best friend and paint the town red! Read on

red letter day

Meaning: a day of significance

Example: The day that I started my journey towards my real career was a red-letter day for me. Read on