Basic English vs Advanced English

1. I don’t know → No idea
2. I am sorry → I apologize
3. I want → I desire
4. I need → I require
5. I like → I enjoy
6. I am happy → I am delighted
7. I am sad → I am sorrowful
8. I think → I believe
9. I am tired → I am exhausted
10. I am afraid → I am apprehensive
11. I don’t understand → I am perplexed
12. I am angry → I am furious
13. I am busy → I am occupied
14. I am hungry → I am famished
15. I am thirsty → I am parched
16. I am surprised → I am astonished
17. I am confused → I am bewildered
18. I don’t like → I dislike
19. I am cold → I feel chilly
20. I am hot → I feel sweltering