reservation

[1]	keeping/holding back , reserve , withholding , reticence , reluctance , hesitation , hesitancy , hedging
[2]	qualm , qualification , scruple , qualification , hesitancy , limitation , exception , objection , demur/demurral/demurrer , condition , proviso , provision
[3]	booking , mental reservation , arriere pensee , appointment , arrangement
[4]	preserve , booking , sanctuary , reserve , area , tract , territory , region , section , plot