| protected area(noun, expression, preserve, reservation, sanctuary) |
| quiet(nervousness, shyness) |
| reluctance(noun, control, restraint, reserve, silence) |
| repression(noun, control, restraint, reserve, silence) |
| risk |
| secretiveness(noun, control, restraint, reserve, silence) |
| self-control(control, restraint, reserve, silence, uncommunicativeness) |
| self-restraint(noun, control, restraint, reserve, silence) |
| sheepishness(noun, reserve, timidity, shyness, reticence) |
| silence(noun, control, restraint, reserve, preserve) |
| submissiveness(meekness, humbleness) |
| suppression(noun, control, restraint, reserve, silence) |
| tentativeness(nervousness, shyness) |
| timorousness(reserve, nervousness, timidity, shyness, bashfulness) |
| uncommunicativeness(noun, control, restraint, reserve, silence) |
| unresponsiveness(noun, control, restraint, reserve, silence) |
| wariness |
| wildlife refuge(noun, expression, preserve, reservation, sanctuary) |
| wildlife sanctuary(noun, expression, preserve, reservation, sanctuary) |