Similar words: frightened, brighten, frightful, tighten, enlighten, bill of rights, righteousness, straighten. Meaning: ['fraɪtnɪŋ] 
n. the act of inspiring with fear. adj. causing fear or dread or terror.
n. the act of inspiring with fear. adj. causing fear or dread or terror. 
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1. The situation was getting quite frightening.
2. Failure is never quite so frightening as regret.
3. Don't stand so near the edge! You're frightening me.
4. I had a frightening encounter with a poisonous snake.
5. The intensity of the hurricane was frightening.
6. The fishermen said the company's seismic survey was frightening away fish.
7. It was a very frightening experience and they were very courageous.
8. The most frightening assumption in this world is that most people assume you are intelligent.
9. That's a frightening thought.
10. The speed of the car was frightening.
11. The high level of crime is frightening away tourists.
12. The jet zoomed low over the houses, frightening everyone.
13. It was all very frightening to a small boy.
14. It's frightening to think it could happen again.
15. He found the responsibility rather frightening.
16. Please call your dog off it's frightening the children.
17. Starting a new school can be quite frightening.
18. The mask was so lifelike it was quite frightening.
19. This is extremely frightening for elderly people.
20. It was a very unpleasant and frightening attack.
21. The magnitude of the epidemic was frightening.
22. The number of youngsters involved in crime is frightening.
23. The deathly pallor of her skin was frightening.
24. It was the most frightening experience of my life.
25. Frightening cruelties were inflicted on child factory workers well into the 19th century.
26. Going into hospital can be very frightening for a child.
27. He used to get cheap thrills out of frightening the girl next door.
28. His aspect was frightening.
29. Police are looking for a sex pest who is frightening late-night travellers.
30. After the quietness of home and school,(sentencedict.com) university had been almost frightening.
More similar words: frightened, brighten, frightful, tighten, enlighten, bill of rights, righteousness, straighten, enlightened, enlightenment, right wing, glistening, heartening, shortening, lightning, fighter, blighted, right, delighted, all right, upright, firefighter, right away, forthright, sprightly, playwright, divine right, civil rights, evening, opening.