Adverbial justly has 2 senses
  1. rightly, justly, justifiedly - with honesty; "he was rightly considered the greatest singer of his time"
    Antonyms: unjustly
    Derived from adjective just1
  2. justly, right - in accordance with moral or social standards; "that serves him right"; "do right by him"
    Derived from adjective just1
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