0 → optimum
1 optimum
2 the best or most effective possible in a particular situation:
Companies benefit from the optimal use of their resources and personnel.
We have found that our workers reach their optimal level of performance around 11 a.m.
Different outsourcing levels may be considered optimal at different times.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.