coeternal /kō-i-tûrˈnəl or kō-ē-/

1. Equally eternal
2. Jointly eternal

coeterˈnally adverb

coeterˈnity noun

• insolvency
• insolvent
• insolvents
• in so many words
• in some measure
• in someone's bad books
• in someone's behalf
• in someone's black books
• in someone's confidence
• in someone's corner
• in someone's debt
• in someone's good books
• in someone's power
• in someone's shoes
• in someone's teeth
• in some sort
• insomnia
• insomniac
• insomniacs
• insomnias
• insomnious
• insomnolence
• insomnolences
• insomuch
• insooth