unipolar

/Y UW1 N IH0 P OW1 L ER0/
adjective
  1. 1

    Having a single pole.

  2. 2

    Not both depressive and manic; not bipolar.

  3. 3

    Of or relating to an international system in which one state wields most of the cultural, economic, and political influence.

Synonyms

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