Erratically and Arbitrarily

adverb

• In an erratic unpredictable manner.
  • usage: "economic changes are proceeding erratically"
  • synonyms: unpredictably

adverb

• In a random manner.
  • usage: "the houses were randomly scattered"; "bullets were fired into the crowd at random"
  • synonyms: randomly, indiscriminately, haphazardly, willy-nilly, at random, every which way

(adv.) In an arbitrary manner; by will only; despotically; absolutely.