nun·cu·pa·tive /ˈnʌnkjʊˌpetɪv, ˈnʌŋ; ˌnʌnˈkjupə-/
1. Publicly or solemnly declaratory. [Obs.]
2. Nominal; existing only in name. [Obs.]
3. Oral; not written.
Nuncupative will or Nuncupative testament, a will or testament made by word of mouth only, before witnesses, as by a soldier or seaman, and depending on oral testimony for proof.