Antonyms for randomly

helter-skelter:

organized, straight, carefully, systematic, methodical.

noun:

methodically, punctiliously, meticulously, deliberately, purposefully, carefully, intentionally, gingerly, orderly, formally, purposely.

Paraphrases for Randomly:

• Adverb :
  accidentally, arbitrarily, blindly, casually, coincidentally, easily, freely, haphazardly, incidentally, indiscriminately, lightly, nowhere, random, readily, wantonly, wilfully, willfully, willy-nilly.
• Proper noun, singular :
  random.
• Verb, past tense :
  randomized.