conservative adj.保守的（modest cautious）
A conservative estimate of the cost to repair the car is $100
composed adj,沉着的
composure n.镇静(calmness self-control)
The irate customer lost his composure and yelled at the clerk
prudent adj.谨慎的(cautious)
vigilant adj.警惕着的 清醒的(watchful alert)
The president's vigilant bodyguard immediately noticed the man with a gun
hardheaded adj.冷静的
sober adj.清醒的
The drunk man is totally another one when sober
discreet adj.慎重的，谨慎的（prudent cautious）
You can tell Jane anything; she is very discreet
discretion n.慎重(caution prudence）
The decorator showed no discretion in her purchases for our new house, everything costing too much money
circumspect adj.慎重的 小心的（prudent cautious）
Never very cricumspect in expressing his views, Bill annoyed almost everyone at the party
cautious adj.小心的 谨慎的
Be cautious when you approach strangers
meticulously adv.很仔细的(carefully scrupulously)
The editor kept on checking spelling mistakes meticulously
sanity n.神志清楚(saneness rationally)