Difference between Imperil and Threaten

IMPERIL vs THREATEN: VERB

To utter intentions of injury or punishment against:
To be a menacing indication of something:
To portend, or give a warning.
To utter intentions of injury or punishment against:He threatened me when I tried to call the police toutterintentionsofinjuryorpun
To be a menacing indication of something:The clouds threaten rain tobeamenacingindicationofsomet
Pose a threat to; present a danger to
To make a threat against someone; to use threats.
To menace, or be dangerous.

To express or use threats.
To announce the possibility of (something) in a threat or prediction.
To give signs or warning of; portend.
To be a source of danger to; endanger.
To express a threat against or give indications of taking hostile action against.
To cause (someone) to feel that his or her power, social standing, or self-esteem is in danger of being diminished.
To use threats, or menaces; also, to have a threatening appearance.
To indicate or be a source of danger or harm.

To utter threats against; to menace; to inspire with apprehension; to alarm, or attempt to alarm, as with the promise of something evil or disagreeable; to warn.
To exhibit the appearance of (something evil or unpleasant) as approaching; to indicate as impending; to announce the conditional infliction of.

Present a danger to
Pose a threat to
To use threats or menaces; have a menacing aspect.
To give indication of menace, or of impending danger or mischief; become overcast, as the sky.
To declare an intention of doing mischief to or of bringing evil on: use threats toward; menace; terrify, or attempt to terrify, by menaces: with with before the evil threatened.
Synonyms Menace, Threaten (see menace), forebode, foreshadow.
To announce or hold out as a penalty or punishment: often followed by an infinitive clause.
To give ominous indication of; presage; portend: as, the clouds threaten rain or a storm.
To be a menace or source of danger to.
To charge or enjoin solemnly or with menace.

Hinder, Devastate, Jeopardise, Prejudice, Damage, Compromise, Risk, Harm, Impair, Undermine, Menace, Peril, Threaten, Endanger, Jeopardize

Interfere, Threat, Harm, Impair, Affect, Impede, Disrupt, Hinder, Hamper, Undermine, Menace, Peril, Jeopardize, Imperil, Endanger

Cripple, Hinder, Devastate, Prejudice, Damage, Compromise, Risk, Harm, Impair, Undermine, Menace, Peril, Threaten, Endanger, Jeopardize

Intimidate, Threat, Harm, Impair, Affect, Impede, Disrupt, Hinder, Hamper, Undermine, Menace, Peril, Jeopardize, Imperil, Endanger

Threaten to use force, act as international policemen.
Washington or necessarily to even threaten Philadelphia directly.
Environmental groups threaten suit over oil dispersant guidelines.
While irksome, it did not threaten the republic.
Tyrion did not mean to threaten the king.
Threaten wanted persons or threaten wanted persons or their families.
Threaten wanted persons or threaten wanted persons or threaten wanted persons or their families.
Redress is sought in the streets, in demonstrations, parades, and protests which create tensions and threaten violence and threaten lives.
He continued to yell, threaten himself and threaten staff, and refused to take his medications.
Substance abuse among employees can threaten public safety, impair job performance and threaten their own safety.