有一个和serious很像的单词

是series吗？n.[C][M]
1. 连续;系列[(+of)]
Then began a series of wet days that spoiled our vacation.
之后就是一连串的下雨天,把我们的假期弄得一团糟。
2. (邮票)套;丛书;辑;组
This publishing firm is planning a new series of school textbooks.
这家出版公司正打算出一套新的系列教材。
3. (棒球等的)连续比赛
4. 【数】级数
5. 【电】串联
6. 【音】(十二音体系中的)序列
7. 【语】一组交替元音

serious
a.
1. 严重的;危急的;令人担心的
His error is serious.
他的错误很严重。
2. 严肃的,庄严的
He was kind and affectionate, but very serious.
他仁慈、亲切,但非常严肃。
3. 认真的;不是开玩笑的;当真的[(+about/in)]
I was pretty serious in what I said at dinner.
我晚餐时说的话是当真的。
4. 重要的;须认真对待的
Getting married is a serious matter.
结婚是件大事。
5. (文学,音乐等)严肃的,非供消遣(或娱乐)的
The play was amusingly written, but its subject was a serious one.
剧本写得风趣逗笑,但其主题则是严肃的。
6. 宗教的;伦理学的
7. 热衷的,极感兴趣的[(+about)]
He is not serious about literature.
他对文学不感兴趣。

serous
adj.
如水的, 浆液(状)的, 血浆的, 含浆液的

secury
se