spare no effort; exert to the utmost

betray (one's country or friends)

show off; parade; flaunt

sell | [antonym] 買

final particle / suffix, placed after many commonly used nouns to avoid employing one-syllable terms in speech (very common in the Beijing dialect 北京話, see: 兒化, 兒化韻)

son

oneself; referring to oneself when addressing parents

baby; child

children/son

sell; vend

daughter; girl

woman; female; lady