Adjective unintentional has 3 senses
  1. undesigned, unintentional - not done or made or performed with purpose or intent
  2. unintentional, unwilled - without deliberate intent; "my heart with unwilled love grew warm"- George Macdonald
    Antonym: willing (indirect, via unwilling)
  3. unintentional, unplanned, unwitting - not intentional; "an unintended slight"; "an unintentional pun"; "the offense was unintentional"; "an unwitting mistake may be overlooked"
    Antonym: intended (indirect, via unintended)
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