Definition of well-poised in US English:

well-poised

adjective

  • Carefully or exactly balanced; held in stable equilibrium; (hence) having a graceful bearing; completely composed and self-assured.

Origin

Early 17th century; earliest use found in John Florio (1553–1625), author and teacher of languages. From well + poised.

Pronunciation

well-poised

/ˌwɛlˈpɔɪzd/