Synonym: big, braggart, bragging, braggy, cock-a-hoop, crowing, self-aggrandising, self-aggrandizing. Similar words: wistfully, boast, boaster, tactful, fretful, doubtful, toast, roast. Meaning: [boʊstfʊl] 
adj. exhibiting self-importance.
adj. exhibiting self-importance. 
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1. He labeled the boastful man a liar.
2. Without wanting to sound too boastful, I think we have the best television programmes in the world.
3. He could not bring himself to like the boastful, vain Arabella.
4. He is so boastful, so ready to justify himself.
5. I'm not being boastful.
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6. New York always has been such a prideful, boastful place with a myopic view of the rest of the world.
7. The tower is a statement of arrival, as boastful and triumphant as the Tughluk buildings around me were understated and austere.
8. Love is never boastful, or conceited, or rude; never selfish, not quick to take offense.
9. We'd always been boastful, conspicuous, triumphalist in our love; now we had to tell the World.
10. He also seemed to be rather boastful and above himself.
11. He is boastful of [ about ] his house.
12. He is boastful of his learning.
13. His action is a satire on his boastful pretension.
14. We should do practical work rather than be boastful.
15. The wisest way is not to be boastful.
16. He made a big dig at his boastful brother.
17. After a few drinks, he always became boastful about his wartime activities.
18. 'They say , those boastful English, that it is the Refuge of many.
19. Let us not become boastful, challenging one another , envying one another.
20. Love is patient and kind, love is not jealous or boastful, it is not arrogant or rude.
21. I tried to emphasize my good points without sounding boastful.
22. However, on striking up a conversation, Chalk, a little the worse for drink, became talkative and boastful.
23. After they had drunk more wine, they started to become loud and boastful.
24. But he could not allow the United States to be both superior and boastful about its superiority.
25. This was in keeping with his nature, for he was boastful, intolerant and greedy.
26. In the weeks before the game, Ogden gave a number of boastful interviews to the press.
27. And few are more humorous, possessing the ability to be simultaneously self-deprecating and boastful.
28. He likes to talk big , ie is very boastful.
29. Some of our neighbours quite justifiably find us overbearing, boastful and condescending towards them.
30. They are witty, cleaver and gifted, stern and kind, boastful and shy.
More similar words: wistfully, boast, boaster, tactful, fretful, doubtful, toast, roast, coast, deceitful, frightful, tactfully, so as to, delightful, coastal, roasted, at full speed, roast beef, milquetoast, plaster cast, thirst for, ex post facto, boat, oasis, board, aboard, on board, cupboard, boarding, shipboard.