un·in·ten·tion·al 
/ˌʌnɪnˈtɛnʃənl̟/ adjective
/ˌʌnɪnˈtɛnʃənl̟/ adjective : not done in a way that is planned or intended : not intentional
▪ If I said something to offend you, I swear it was unintentional. ▪ an unintentional omission/error
▪ If I said something to offend you, I swear it was unintentional. ▪ an unintentional omission/error
— un·in·ten·tion·al·ly adverb
▪ He unintentionally stepped on my foot.
▪ He unintentionally stepped on my foot.
