1. in a manner showing deep religious commitment, reverence, or piety
2. in a manner showing earnest dedication or commitment to a person, cause, or activity

Examples

• She devotionally attended church every Sunday without fail.
• The monks chanted devotionally throughout the evening service.
• He devotionally served his mentor for over a decade.
• The community devotionally observed the sacred rituals passed down through generations.
• She devotionally cared for her elderly parents every single day.
• The volunteers devotionally worked to help those in need.