Definition of affiance in English:

affiance

verb

literary
  • Be engaged to marry.

    ‘Ann Elliott was affianced to Col. Lewis Morris’
    • ‘Ferdinand wished to wed Anna, who was affianced to Edmond.’
    • ‘The Council ordered me to be affianced to you.’
    • ‘Yet, it astounded those women that her father had wealth, power, and she had beauty, and she wasn't even affianced.’
    • ‘But she has affianced her daughter to a promising young man in a prosperous Korean family.’
    • ‘She and Gabriel are affianced, she added as an after thought.’
    busy, unavailable, occupied
    View synonyms

Origin

Late 15th century: from Old French afiancer, from afier promise, entrust from medieval Latin affidare declare on oath from ad- toward + fides trust.

Pronunciation:

affiance

/əˈfīəns/