involve

Have as a necessary feature.

“This decision involves many changes”

Connect closely and often incriminatingly.

Require as useful, just, or proper.

Contain as a part.

“Dinner at Joe's always involves at least six courses”

Engage as a participant.

“Don't involve me in your family affairs!”

Make complex or intricate or complicated.

“The situation was rather involved”

Occupy or engage the interest of.

“His story completely involved me during the entire afternoon”