Definition of go-aheadative in US English:

go-aheadative

(also go-aheaditive)

adjective

US
rare, informal
  • Displaying or characterized by initiative and energy.

Origin

Mid 19th century. Partly from to go ahead + -ative.

Pronunciation

go-aheadative

/ˌɡəʊəˈhɛdətɪv/