Last words of a 45-Across

• In-sickness-and-in-health words
• It's said while waving your hand wildly
• Pledge of allegiance, maybe
• Statement that makes two one
• "Yes, she is the one for me to love and to cherish, in sickness and in health, for as long as we both shall live"
• Merger announcement?
• "'Deed ___" (1948 hit for Lena Horne)
• Brief vow
• Solemn assent

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1908, artificial language based on Esperanto, devised 1907; from Ido -ido “offspring,” suffix representing Latin -ida , Greek -ides .