engagement
Pronunciation: /ɪnˈgeɪdʒm(ə)nt, ɛn-/
noun
- 1a formal agreement to get married: she’d broken off her engagement to Paul
- the duration of an agreement to get married: a good long engagement to give you time to be sure

Origin:
early 17th century (in the general sense 'a legal or moral obligation'): French, from engager 'to pledge' (see engage)