1. ban, banning, forbiddance, forbidding

an official prohibition or edict against something

Synonyms

• ban
• banning
• forbiddance

2. dour, forbidding, grim

harshly uninviting or formidable in manner or appearance

Example Sentences:
'a dour, self-sacrificing life'
'a forbidding scowl'
'a grim man loving duty more than humanity'
'undoubtedly the grimmest part of him was his iron claw'

Synonyms

• dour
• grim

3. baleful, forbidding, menacing, minacious, minatory, ominous, sinister, threatening

threatening or foreshadowing evil or tragic developments

Example Sentences:
'a baleful look'
'forbidding thunderclouds'
'his tone became menacing'
'ominous rumblings of discontent'
'sinister storm clouds'
'a sinister smile'
'his threatening behavior'
'ugly black clouds'
'the situation became ugly'

Synonyms

• baleful
• menacing
• minacious
• minatory
• ominous
• sinister
• threatening