unintentional

From un- +‎ intentional.

• IPA^(key): /ˌʌnɪnˈtɛnʃənəl/, [ˌʌnɪnˈtʰɛnʃn̩ɫ̩]

• Audio (Southern England):

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unintentional (comparative more unintentional, superlative most unintentional)

1. Not intended or deliberate; inadvertent; unwitting.
   • 2015 July 22, Reshma M. Khan et al., “Embolic Stroke as the Initial Manifestation of Systemic Lupus Erythematosus”, in Case Reports in Rheumatology‎^[1], volume 2015, →DOI:

     Review of systems was positive for unintentional weight gain of 13.5 kilograms in the last eight months, excessive fatigue, fever, difficulty focusing, one episode of painful oral ulcer on the roof of her mouth, change in the hair texture with nonscarring alopecia, shortness of breath with exertion, and constipation.

• incidental, unintended; see also Thesaurus:accidental or Thesaurus:unintentional

• intentional

• unintentionality
• unintentionally
• unintentionalness