invertebrate

/IH0 N V ER1 T AH0 B R AH0 T/
noun
  1. 1

    An animal without vertebrae, i.e. backbone.

  2. 2

    A spineless person; a coward.

Antonyms

adjective
  1. 1

    Lacking a backbone.

Source: https://en.wiktionary.org/wiki/invertebrate