red flags

Signs of trouble

Red flags are warning signs that something is wrong or potentially dangerous.

The term comes from the literal use of red flags to signal danger or stop, as on railroads or beaches.

In relationships and business, red flags are behaviors or circumstances that suggest trouble ahead: His constant criticism of her friends was a red flag.

The phrase has become especially common in dating contexts, where people discuss red flags as reasons to end or avoid a relationship.

Opposites
warning signals vs. approval signals

red flagsgreen lights

Signals indicating permission

green flags · all-clear · thumbs up · seal of approval · stamp of approval

negative indicators vs. positive indicators

red flagsgreen lights

Signals indicating permission

green flags · reassurances · thumbs up · seals of approval · stamps of approval

reasons for concern vs. reasons for confidence

red flagsgreen flags

Positive warning signs

selling points · strong points · virtues · merits · assets

Family

red, flag, flags, flagging, flagged, unflagging, white flag, red flag, checkered flag

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G