Word Network: 確実に

Mistake; error; fault.

Trust or reliance placed in someone's character, ability, or honesty. It implies a deep belief that a person or institution will act as expected or remain dependable over time.

Certain; sure; reliable; perhaps.

A guarantee or warranty provided to ensure the quality, performance, or truth of something. It is most commonly used for product warranties or official promises that a specific outcome will occur.