The phrase "austere rules" is correct and usable in written English.
It can be used to describe strict or severe regulations or guidelines that lack any embellishments or leniency.
Example: "The organization implemented austere rules to ensure discipline and order among its members."
Alternatives: "strict regulations" or "severe guidelines".
Many of the city's residents have fled, and those who remain live under the Islamic State's austere rule.
Work was an austere religion; each task had to be completed in accordance with strict rules, in order to earn money.
Devastated by Peruvian slaving raids and a smallpox epidemic, their population dwindled to as low as 111 before Chile annexed the island, imposing austere military rule for decades.
The austere, contemplative Rule of St Benedict remains important to him – it is to Worth he is retreating this week, to cleanse his soul and start thinking and praying about the task ahead.
A vast, arid state on the edge of the Sahara desert, Niger endured austere military rule for much of its post-independence history and is rated by the UN as one of the world's least-developed nations.
The Duke (Lorenzo Pisoni), disguised as a friar, goes underground to observe his community; in his absence, his austere deputy, Angelo Michael Haydenn), rules that fornication is punishable by death.
His true greatness consisted in his ability to stick to that austere set of rules even in the face of the most trying circumstances and against the most daunting odds.
Living a strict and austere life of rules, regulations, goals, promises, consequences..
Following the austere years of Commonwealth rule, a great flourishing and development in both architecture and the arts began after the restoration of the monarchy in 1660.
The Augustinians spread quickly from the beginning of the 12th century onwards, while later in the century the Cistercians reached England, creating houses with a more austere interpretation of the monastic rules and building the great abbeys of Rievaulx and Fountains.
