stringent Synonyms

rigorous tight stiff stern spartan severe ruthless stricter forceful rigid restringing relentless punitive precise strict stringency strong tougher strictest rigourous ironhanded hard and fast unpermissive authoritarian unsparing uncompromising tough tighter swingeing poignant peremptory cruel convincing constrictive confining coercive clockwork caustic brutal bleak binding austere astringent demanding disciplinary dour oppressive ironclad inflexible harsh