fiancee

fi‧an‧cée /fiˈɒnseɪ $ ˌfiːɑːnˈseɪ/ BrE AmE noun [countable]
[Date: 1800-1900; Language: French; Origin: fiancé used for females]
the woman who a man is going to marry
• • •
THESAURUS
▪ girlfriend a girl or woman that you have a romantic relationship with, especially for a fairly long time: Katherine was his first girlfriend.
▪ partner the person you are married to, or the person you are living with and having a sexual relationship with: He brought his partner along to the party.
▪ old flame informal someone who was your girlfriend or boyfriend in the past: I found a love letter from one of his old flames.
▪ mistress a woman that a man has a sexual relationship with even though he is married to someone else. Often used when the man is famous or powerful: The president had a mistress for many years.
▪ lover someone who you have a sexual relationship with, but who you are not married to: He was going to meet his secret lover.
▪ fiancée the woman who a man is going to marry: Rod plans to marry his fiancée later this year.
▪ ex informal a man's former wife or girlfriend: My ex looks after the children on Thursdays.
▪ be going out with somebody if you are going out with a girl or woman, she is your girlfriend: She's going out with a guy she met at work.

Oxford Advanced Learner's Dictionary

fiancée

fi·an·cée [fiancée fiancées] [fiˈɒnseɪ] [ˌfiːɑːnˈseɪ] noun
the woman that a man is engaged to
• Paul and his fiancée were there.
Collocations:
Marriage and divorce
Romance
fall/be (madly/deeply/hopelessly) in love (with sb)
be/believe in/fall in love at first sight
be/find true love/the love of your life
suffer (from) (the pains/pangs of) unrequited love
have/feel/show/express great/deep/genuine affection for sb/sth
meet/marry your husband/wife/partner/fiancé/fiancée/boyfriend/girlfriend
have/go on a (blind) date
be going out with/ (especially NAmE) dating a guy/girl/boy/man/woman
move in with/live with your boyfriend/girlfriend/partner
Weddings
get/be engaged/married/divorced
arrange/plan a wedding
have a big wedding/a honeymoon/a happy marriage
have/enter into an arranged marriage
call off/cancel/postpone your wedding
invite sb to/go to/attend a wedding/a wedding ceremony/a wedding reception
conduct/perform a wedding ceremony
exchange rings/wedding vows/marriage vows
congratulate/toast/raise a glass to the happy couple
be/go on honeymoon (with your wife/husband)
celebrate your first (wedding) anniversary
Separation and divorce
be unfaithful to/ (informal) cheat on your husband/wife/partner/fiancé/fiancée/boyfriend/girlfriend
have an affair (with sb)
break off/end an engagement/a relationship
break up with/split up with/ (informal) dump your boyfriend/girlfriend
separate from/be separated from/leave/divorce your husband/wife
annul/dissolve a marriage
apply for/ask for/go through/get a divorce
get/gain/be awarded/have/lose custody of the children