involved
v.v. to include someone or something as a necessary part of an activity. It can also mean making someone take part in a situation.
v. to include something as a necessary component or result; to cause someone to participate in an activity or situation.
The new project involves a lot of hard work.
The police suspect that several people were involved in the robbery last night.
The proposed legislation involves a complete restructuring of the healthcare system, requiring cooperation between private insurers and public health officials.
From involve + -ed.
The verb is transitive. When followed by another action, it takes the -ing form (gerund) rather than the infinitive.
The job involves to travel.The job involves traveling.The verb involve is followed by a gerund (-ing), not a to-infinitive.