I'm not being boastful.

我不是在自夸。

《柯林斯英汉双解大词典》

Likewise what DE VERLI believes: the true love is reserved instead of being boastful;

就如DE VERLI所坚信的那样：真正的爱，含蓄而不张扬；

youdao

How do you share your contributions without being perceived as arrogant or boastful?

如何分享自己的贡献而不被别人看成是傲慢或吹嘘？

youdao

The head teacher said girls needed to understand that taking credit for achievements was not the same thing as showing off or being boastful.

BBC: Girls' school holds 'blow your own trumpet' week

Ravi, he said, was boastful, untruthful, and obsessed with being perceived as wealthy.

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