in·i·tia·tive 
(ĭ-nĭshə-tĭv)
(ĭ-nĭshə-tĭv)n.
1. The power or ability to begin or to follow through energetically with a plan or task; enterprise and determination.
2. A beginning or introductory step; an opening move: took the initiative in trying to solve the problem.
3.
a. The power or right to introduce a new legislative measure.
b. The right and procedure by which citizens can propose a law by petition and ensure its submission to the electorate.
adj.
Idiom: 1. Of or relating to initiation.
2. Used to initiate; initiatory.
on (one's) own initiative
Without prompting or direction from others; on one's own.
in·itia·tive·ly adv.