1) a discreet person [answer]

谨慎的人[回答]
3) Discretion forbids a reply.

谨慎阻止了回答
4) a careful reply

审慎的回答
5) reciprocation wariness

回报谨慎
1.
This study examined the influence of reciprocation wariness, a general fear of exploitation in interpersonal relationships, on negotiators motivational orientation, negotiation behavior and outcomes.
回报谨慎是人们害怕在人际关系中被他人利用的一种信念。
6) prudent man

谨慎人
1.
The prudent investment rule of trustees in America has developed from the legal list stage to prudent man rule and now the prudent investor rule.
美国信托受托人谨慎投资义务规则经历了从法定清单制度、谨慎人规则到谨慎投资人规则的历史过程。
补充资料:谨慎
对外界事物或自己的言行密切注意,以免发生不利或不幸的事情:小心~。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条