unconventional
un.con.ven.tion.al \.*n-k*n-'vench-n*l, -*n-*l\ \-.ven-ch*-'nal-*t-e-\ \-'vench-n*-le-, -*n-*l-e-\ aj : not conventional : not bound by or in accordance with convention : being out of the ordinary - un.con.ven.tion.al.i.ty n
Webster's English Dictionaryun.con.ven.tion.al \.*n-k*n-'vench-n*l, -*n-*l\ \-.ven-ch*-'nal-*t-e-\ \-'vench-n*-le-, -*n-*l-e-\ aj : not conventional : not bound by or in accordance with convention : being out of the ordinary - un.con.ven.tion.al.i.ty n