详细解释:a. 小心的, 慎重的
词型变化：
名词:discreetness副词:discreetly词意辨析：
discreet, discrete这是两个形近单词。
discreet: 意思是“（言行）谨慎的”、“慎重的”“有判断力的”（not saying too much；showing good sense and judgment），它的名词是 discretion.反义词是鲁莽: indiscreet（形容词）及 indiscretion （名词）。the action he takes is far from discreet.
他所采取的行动很不谨慎。you must show more discretion in choosing your friends.
你在选择朋友时要谨慎些。
discrete: 意思是“分离的”、“不联络的”、“各异的”（separate，disjoined or individually distinct）。它的名词是 discreteness.this proposition contains two discrete parts.
这个建议由两个不同的部分组成。our company is made up of many samll，discrete units.
我们的公司由许多小的各自分立的单位组成。英语解释：
形容词 discreet:
marked by prudence or modesty and wise self-restraintunobtrusively perceptive and sympathetic同义词：discerning