thought The word "thought" is a noun that describes the thinking process. When an idea enters your mind, you have a thought. - That’s an interesting thought.
- Bob gave a lot of thought to his decision.
- Hold that thought. (Let’s consider that idea later.)
- What are your thoughts about all of this? (What are your opinions?)
- They didn’t put much thought into the design of the school. *
- On second thought, I think I will have another piece of pizza. (on second thought = I have changed my mind.)
- Your family is in our thoughts and prayers. (This is a common expression of condolence)
The word "thoughtful" is an adjective. It means that a person is considerate of other people and thinks carefully in regards to others: - That was a very thoughtful gift.
- President Obama gave a thoughtful commencement speech at the graduation ceremony.
- Thank-you! How thoughtful of you.
Of course, the word "thought" is also the past tense and past participle form for the verb "think." - She thought today was the 19th, but it’s actually the 20th.
- I haven’t thought about that very much.
*Note: The word "thought" can be used as either a count noun or a noncount noun. Click here to learn more words. May 20, 2013 | 
