fervently russian

• пылко

  ardently, passionately, fervently

• и́стово

  fervently, zealously, devoutly, ardently, passionately

Examples

• Она истово молилась перед иконой каждый вечер

  Every evening, she prayed fervently before the icon.

• Старик истово верил в свою правоту

  The old man fervently believed that he was right.