Differences Between Interested – Interesting, Interested in Ving- Interested to do

“Interested” and “interesting”, “interested in Ving” and “interested to do” – What are the differences in meaning and usage between them? Is there any grammar rule that helps differentiate them? Let’s find out here in this writing!


Despite the fact that “interested” and “interesting” are all adjective forms of the word interest, they feature different meanings and can’t be used interchangeably. However, these 2 words are often used mistakenly in sentence that may lead to grammatical mistakes or transfer incorrect idea of the speakers or writers. Besides, there are also 2 other phrases containing the word “interest”that maybe used incorrectly quite commonly: “interested insth/ving” and “interestedto V”.

For these reasons, in the today’s article, we are going to make clear all the meanings and usages of these words and phrases to you, so that you will never make any mistakes when using them both in spoken and written English. Well, that’s enough for the introduction, now, it’s time for us to start figuring out the words “interested in” meaning right below here.

Interested in definition

The adjective “interested” is formed by adding –ed at the end of the verb “interest”. The verb “interest” itself means “excite the curiosity or attention of (sb)” but when added –ed to have its adjective form – “interested” – the meaning changes into showing curiosity or concern about someone or something; having the feeling of interest. When “interested” goes with preposition “in”, we have phrase “interested in” that means giving attention to something since you enjoy doing it or finding out about it.

For example: I am interested in speaking English.

Interested and interesting

Of course, “to be interested” isn’t similar to “being interesting”. But how are they different from the other? Here is very important English grammar rule that helps you understand the difference in usage and meaning of these 2 words - interested and interesting – and other adjectives ending in –ed/-ing.

  • Interested is used to describe the feeling of a person or people who like and interest in something or doing something and they want to know more about it.

For example: I am interested in listening to music. (= I like listening to music; interested describes the speaker, “I”)

  • Interesting is used to describe the thing that a person/people are responding to. The things that you like, have curiosity, and want to know more about are interesting.

For exampleThat music is really interesting. (= The music itself is great and you like it; interesting describes that music)

In fact, not only do “interested” and “interesting” follow this rule, the same also applies to other English adjectives with –ed/-ing like excited and exciting orsurprised and surprising. Generally, adjectives with -ed ending describes the feelings and emotions that let us how people feel about something, while adjectives with –ing ending describe the things that cause the emotion.

One tip for you to remember and use this rule easily and correctly in most cases: "-ing" is for the thing. ("-ing" is short for “surprising” or "interesting")

Interested inVing and interested to do

When it comes to phrases interested in, the structure interested in something/doing something always comes to our minds first. But together with this structure, there’s still another very common one that is interested to do. And they are not the same for sure.

“Interested in something/doing something” is used to refer to something you are attracted to or you would like to do, like “He is interested in playing football” (= He would like to play football). About phrases “interested to do something”, it may be used to talk about the fact that you want to get more information about a thing (because the information is interesting), as in this sentence “He is interested to hear everyone’s opinion on this subject” (= He would like to find out people’s opinion on this subject).


To be honest, it’s quite complicated to differentiate the meaning and usage of all phrases above. But once you understand the grammar rule and tip we provided in this article, you will no longer be mistaken between “interested and interesting” as well as “interested in Ving” and “interested to do something. Try to do as many English grammar exercises related to adjectives ending in –ed/-ving as you can, then you are sure to completely master all the knowledge of English we brought here in this writing. In the end, we really hope that you really enjoyed this post!