Disingenuous means. 35 Modern Words Recently Added to the Dictionary. Another 25 Words you Don’t Know. Humans Following on from our first list of words you don’t know, we present another 25. Learn one a day and impress your friends! Words 25 – 21 25. Girn – To bare your teeth in anger and sadness 24. 23. 22. 21. Words 20 – 16 20. 19. 18. 17. 16. Words 15 – 11 15. 14. 13. 12. 11. Words 10 – 6 10. 9. 8. 7. 6. Words 5 – 1 5. 4. 3. 2. 1. Jamie Frater Jamie is the founder of Listverse. Knoword | Expand your vocabulary! Parley - Vocabulary Trainer.