UNATTEMPTED
a.Not attempted; not tried; not essayed. Things unattempted yet in prose or rhyme.
unattempted
un at tempt ed |ˌənəˈtem (p )tid ˌənəˈtɛmptəd | ▶adjective not previously attempted or embarked upon; untried.
un |attempt ¦ed |ʌnəˈtɛm (p )tɪd | ▶adjective not previously attempted or embarked upon; untried.