first-born

/F ER1 S T B AO0 R N/
adjective
  1. 1

    Born as the first one in a family, flock or the like.

  2. 2

    Most excellent; most distinguished or exalted.

Antonyms

Source: https://en.wiktionary.org/wiki/first-born, https://en.wiktionary.org/wiki/firstborn