1. With perseverance

See also: persevering

• regarding
• regardless
• regards
• regather
• regatta
• regency
• regeneracy
• regenerate
• regenerating
• regeneration
• regenerative
• regenerator
• regent
• regex
• reggae
• Reggane
• regicidal
• regicide
• regime
• regimen
• regiment
• shoddily
• shoddiness
• shoddy
• shoe