The correct answer is: recent.
An antonym is a word that means the opposite of another word. In this case, the word “obsolete” means no longer in use or no longer fashionable. The word “recent” means happening or coming after a short time. Therefore, the word “recent” is the opposite of “obsolete” because it means something that is still in use or fashionable.
The other options are not opposites of “obsolete”. The word “conducive” means helpful or leading to a particular result. The word “rare” means not common or not found often. The word “useless” means not able to be used or not having any value.
Here are some examples of how the word “obsolete” can be used in a sentence:
- The word “esquire” is now considered obsolete.
- The floppy disk is an obsolete technology.
- The term “maiden voyage” is now obsolete, as most ships no longer have maiden voyages.
Here are some examples of how the word “recent” can be used in a sentence:
- I have just had a recent haircut.
- I have just read a recent article about the latest scientific discoveries.
- I have just seen a recent movie that I really enjoyed.