faithful

ве́рный

Loyal; adhering firmly to person or cause

• Tom is faithful to Mary.

  Том верен Мэри.

  Tatoeba · CK · CC BY 2.0 FR

• The film stayed faithful to the book.

  Фильм соответствовал книге.

  Tatoeba · AlanF_US · CC BY 2.0 FR

ве́рный

Having faith

ве́рный

Reliable; worthy of trust

ве́рный

Consistent with realityредкое

ве́рный

Engaging in sexual relations only with one's spouse or long-term sexual partnerредкое

ве́рный

Injective in specific contexts, e.g. of representations in representation or functors in category theoryредкое

ве́рный

Of a module, whose annihilator is zeroредкое