求英语单词中含有不少于四个同一字母的单词

这个问题很有趣，我想了一下，符合以上特点的单词主要应该是那些含有可以有重复字母的单词，如含有oo, ee, ss, tt 等的单词，而且尤其是一些复合词（如goodlooking）。下面是临时想到的一些（有些是搜索来的），为便于理解，均附了一个例子，肯定很不全面，请各位老师补充：

1. goodlooking

She was not exactly goodlooking, but perfectly presentable. 她并不是很漂亮，但是非常体面。

2. footloose

Ten years ago I was footloose and fancy-free. 十年前我毫无牵累，自由自在。

3. cookbook

After 25 years of collecting recipes, she has compiled them into a cookbook. 她搜集了 25 年食谱，现在把它们编成了一本烹饪书。

4. schoolroom

We camped out for the night in a mission schoolroom. 我们在传教团教室里借宿了一晚。

5. foolproof

We’re trying to work out a way to make the system foolproof. 我们正努力想办法使这个系统简单易操作。

6. reengineered

They reengineered the department, and cut nearly 400 jobs. 他们对部门进行重组，削减了将近 400 个工作岗位。

7. beekeeper

Her father is a beekeeper. 他父亲是养蜂的。

8. assess

We need to assess the new situation and adapt accordingly. 我们需要评估一下新形势以便作出相应的改变。

9. assassinate

President Kennedy was assassinated in Dallas, Texas in 1963. 肯尼迪总统于1963 年在得克萨斯州的达拉斯遇刺身亡。

10. possess

One quality the team possessed in abundance was fighting spirit. 该队的一大特点是斗志昂扬。

11. possession

My grandfather had among his possessions a portrait by Matisse. 我祖父有一幅马蒂斯画的肖像画。

12. Mississippi

The Mississippi River drains a vast area. 密西西比河枯竭了一大片区域。

13. homelessness

Unemployment contributes directly to homelessness. 失业直接影响到无家可归。

14. helplessness

A feeling of utter helplessness washed over him. 一种全然无助的感觉涌上他的心头。

15. thoughtlessness

Richard was anxious to atone for his thoughtlessness. 理查德急切地想弥补自己考虑不周的过失。

注：所有less结尾的形容词在变成名词时加上ness，均符合要求。