Having the quality or nature of a portent; ominous, prophetic.
Origin
Late 16th century; earliest use found in Thomas Nashe (d. c1601), writer. From classical Latin portent-, past participial stem of portendereportend + -ive.
Definition of portentive in US English:
portentive
adjectivepɔːˈtɛntɪv
rare
Having the quality or nature of a portent; ominous, prophetic.
Origin
Late 16th century; earliest use found in Thomas Nashe (d. c1601), writer. From classical Latin portent-, past participial stem of portendere portend + -ive.