Answer: threat

AnswerCrossword Clue
THREATSecurity problem
THREATMenace.
THREATOr else!
THREATWarning
THREATBlackmailer's weapon
THREATCommination
THREATSword of Damocles
THREATTerrorist tactic
THREATTime bomb, say
THREATIt might be idle
THREATDeclaration ending "or else!"
THREAT... level
THREATReason for an evacuation
THREATHostile remark.
THREAT"... or I quit!," e.g.
THREATNuclear ...
THREATIndication of imminent evil
THREATThug's message
THREATWords from a blackmailer
THREATIntimidation
THREATWords from a blackmailer, collectively
THREATBlackmailer's tactic
threatindication of possible trouble
threatto intimidate, also THREATEN
threatexpression of intent to harm
THREATIt may be identified by the Department of Homeland Security
THREATDanger
THREATForewarning
THREAT"...or else!" statement
THREATHazard
THREATBully's remark
THREATMenacing statement
THREATClenched fist, e.g.
THREATBlackmail tactic
THREATIt may end with "...or else!"
THREATImpending danger
THREATPossible danger
THREATBully's warning
THREATMenace
THREATBit of saber-rattling