**Infallible** (безупречный, безошибочный) is an adjective used to describe something as perfect or incapable of failure or error. Here are some examples of how it can be used in English:
1. My mother is an infallible cook — every dish she prepares is a masterpiece.
2. The company's CEO believes in his infallible business strategy, which has led to the company's success.
3. The teacher claimed to have an infallible memory, but I still doubted his ability to remember every student's name.
4. The weather forecast predicted an infallible sunny day, but unfortunately, it started raining instead.
5. The judge is considered infallible in his decisions, and his rulings are always respected by all parties involved.
6. The GPS system provided an infallible route to our destination, and we arrived without any problems.
7. The team's captain is known for his infallible leadership skills, which have helped the team win many games.
8. The scientist's theory was considered infallible until new evidence emerged that challenged its validity.
9. The security system installed in the building is infallible, and it has never failed to detect any intrusions.
10. The software developer claims to have created an infallible algorithm that will never produce errors.