Here are some options depending on the context:
* "Be" - If you are talking about something being in its rightful place, you can use "be" as a shorter alternative. Example: "This book belongs on the shelf."
* "Part of" - This phrase can be used to indicate belonging in a group or situation. Example: "I feel like I'm part of this team."
* "In" - This can work in some situations to indicate belonging to a place or group. Example: "You in the club?"
* "Own" - Can be used to indicate ownership, which implies belonging. Example: "This book owns to me."
It's important to consider the context and choose a word or phrase that clearly conveys the meaning you intend.