Into (preposition)

1. Indicating the direction of movement or action towards the inside of something.
2. Indicating that someone or something is becoming involved in an activity or situation.
3. Indicating that something is changing in nature, form, or function.
4. Indicating that something is being transformed or converted into something else.
5. Indicating the point at which something starts or is inserted.

Origin:

Middle english: from in + to.

Examples:

1. I will go into the room.
2. I will look into the matter.
3. I will change into my pajamas.
4. I will turn into a butterfly.
5. I will insert into the slot.