noun which may take the genitive case particle 'no'
not yet started; unstarted
Describes work, tasks, or projects that have not been begun. Often used in business or project management contexts.
That project has not been started yet.
There are still several unstarted tasks remaining.
着手 is the positive form meaning 'to start' or 'to commence' (work). 未着手 is its negative counterpart.
Compound of 未 (mi, 'not yet') + 着手 (chakushu, 'start work'). The reading みちゃくしゅ follows standard on'yomi.