BOAST, BRAG, VAUNT, CROW mean to express pride in oneself or one's accomplishments.

boast

to speak too proudly or happily about what you have done or what you own 自吹自擂，吹嘘，夸耀

BOAST often suggests ostentation and exaggeration but it may imply a claiming with proper and justifiable pride.

// boast of every trivial success 吹嘘每一个微不足道的成功

// Parents enjoy boasting about their children's achievements. 父母喜欢夸耀子女所取得的成绩。

// They boasted that they had never lost a single game. 他们夸口说从来没有输过一场比赛。

// He liked to boast that he was the richest man in town. 他喜欢吹嘘自己是镇上的首富。

to have or own something to be proud of 拥有（值得自豪的东西） = HAVE

// The town boasts one of the best museums in the area. 该镇拥有该地区最好的博物馆之一。

brag

to speak too proudly about what you have done or what you own 吹嘘，夸耀

BRAG suggests crudity and artlessness in glorifying oneself.

// She's always bragging about how much money she earns. 她老是吹嘘自己挣钱如何如何多。

// They bragged that their team had never been beaten. 他们夸耀说他们队从未输过。

vaunt

to speak proudly about or praise something, especially in a way that is more than acceptable or reasonable: 夸张，自夸，吹牛（尤其是以超出可接受或合理的方式）

VAUNT usually connotes more pomp and bombast than BOAST and less crudity or naivete than BRAG.

// The local people like to vaunt the glories of their faded past. 当地人民喜欢夸耀过去的辉煌。

crow

to talk in a proud and annoying way about something you have done 得意洋洋，洋洋自得地夸口，吹嘘

CROW usually implies exultant boasting or bragging.

// He's always crowing about his latest triumph. 他总是为自己最近的胜利而洋洋自得。

boast, brag, vaunt, crow