threatening
SMART Vocabulary: related words and phrases Dangers and threats
balefully
baneful
banefully
black spot
hang
hang over something
hazard
hazardous
hazardously
on/under pain of deathidiom
or elseidiom
parlous
parlously
peril
someone's bark is worse than his/her biteidiom
tombstoning
treacherously
triple threat
ultra-hazardous
venturesome
Related word
menacingly