un·nec·es·sary 
/ˌʌnˈnɛsəˌseri, Brit ˌʌnˈnɛsəsri/ adjective
/ˌʌnˈnɛsəˌseri, Brit ˌʌnˈnɛsəsri/ adjective [more unnecessary; most unnecessary] : not needed or necessary
▪ In this city, owning a car is unnecessary. ▪ an unnecessary delay ▪ Let's not take any unnecessary risks.
▪ In this city, owning a car is unnecessary. ▪ an unnecessary delay ▪ Let's not take any unnecessary risks.
— un·nec·es·sar·i·ly /ˌʌnˌnɛsəˈserəli, Brit ˌʌnˈnɛsəsrəli/ adverb
▪ I think the punishment you gave her was unnecessarily harsh. ▪ These new rules are unnecessarily complex.
/ˌʌnˌnɛsəˈserəli, Brit ˌʌnˈnɛsəsrəli/ adverb ▪ I think the punishment you gave her was unnecessarily harsh. ▪ These new rules are unnecessarily complex.
