おさらば

noun, noun or participle which takes 'suru', intransitive verb

saying goodbye; bidding farewell; breaking off

Used as a noun or with する to mean parting ways, often with a sense of finality or cutting ties. Can be used for both people and things one is done with.

• 彼かれとはもうおさらばだ。

  I'm done with him.

• この古ふるい習しゅう慣かんとはおさらばしよう。

  Let's say goodbye to this old habit.