closeone
nounUK /ˈkləʊs wʌn/
US /ˈkloʊs wʌn/
A close one is a person you love and trust very much.
My sister is my closest closeone, and I tell her everything.
OTHER MEANINGS
2. A game or race that is almost a tie.
The race was a close one, but Mia won by a step.
3. A dangerous moment that you just barely escape.
That was a close one when the ball flew past my head!
4. A person who stays near you during a trip or activity.
Stay with your closeone so you don't get lost in the crowd.