How to spell TWTWEEN correctly?

If you meant "tween", the correct spelling for the age group between childhood and teenage years, then some possible suggestions are "tween", "in-between", "adolescent" or "preteen". However, if "twtween" means something else, please provide more context for accurate suggestions.

• between The park is located between the river and the city center.
• tween My cousin is a tween and loves listening to music on her phone.

Intertubing

• antedating
• entertain
• entertainer
• entertaining
• inditing
• inner-tubing
• intertwine
• interurban
• intuiting
• undertaking