to plan; to plot; to propose; to design; to intend; to contemplate
to attempt (e.g. suicide, murder); to undertake (e.g. business)
彼は脱出を企てていた。
He was plotting an escape.
新事業を企てるのは楽しい。
It's fun to plan a new venture.
悪事を企てた人物がついに特定された。
The person who plotted wrongdoing was finally identified.