severe synonyms

hard critical sharp rigid cruel grim drastic rigorous stringent oppressive grinding stubborn unjust relentless bullying austere uncompromising intractable autocratic exacting implacable crusty gruff overbearing unrelenting ascetic barbarous domineering tyrannical unmitigated censorious despotic obdurate pitiless mordant crabbed unmerciful Draconian

close firm determined resolved strict stiff harsh stern earnest adamant forbidding inflexible resolute unchanging inexorable unyielding immovable peremptory unfeeling inconsiderate unalterable unbending insensate strait-laced