| reserve(noun, territory, control, restraint, contract) |
| booking(noun, act, registration, held, advance booking) |
| retention(noun, employment, custody, holding) |
| limitation(noun, control, check, limit, weakness) |
| preserve(noun, verb, territory, reserve, sanctuary) |
| hesitancy(noun, condition, doubt, uncertainty, dissent) |
| restriction(noun, act, control, limit, weakness) |
| humbleness(noun, modesty) |
| doubt(noun, anxiety, condition, request, question) |
| qualm(noun, feeling, anxiety, certain, doubt) |
| qualification(noun, control, check, limit, weakness) |
| condition(noun, control, charge, check, limit) |
| hesitation(noun, anxiety, doubt, uncertainty, fear) |
| provision(noun, charge, condition, limited, requirement) |
| proviso(noun, charge, condition, limited, requirement) |
| reticence(noun, control, restraint, reserve, silence) |
| stipulation(noun, control, limit, condition, limited) |
| engagement(noun, condition, requirement, custody, proviso) |
| misgiving(noun, feeling, anxiety, certain, doubt) |
| term(noun, limit, condition, limited, requirement) |