think v.
思考；认为
I think it’s going to rain.
thinking n./adj.
（n.）思维，想法；（adj.）有思想的，深思熟虑的
Critical thinking is essential in science.
thought n.
思想；想法；思维
She shared her thoughts on the topic.
thinker n.
思想家；善于思考的人
Confucius was a great thinker in ancient China.
thinkable adj.
可想象的；可能的
Such a disaster was barely thinkable before it happened.
unthinkable adj.
不可思议的；无法想象的
It was unthinkable that he would lie to us.
overthink v.
过度思考；想得太多
Don’t overthink it—just make a decision.