reserve
US /rɪˈzɝːv/
UK /rɪˈzɝːv/

1.
2.
3.
a feeling of shyness or caution
:
•
He spoke with some reserve about his past.
•
Her initial reserve soon faded as she got to know them.
1.
1.
kept for a special or future use
:
•
The reserve parachute is a backup in case of emergency.
•
They have a reserve team ready to play if needed.