to  sell   somebody  down the river
sell
sɛl
sel
somebody
daʊn
dawn
down
ðə
dhē
the
rɪvə
rivē
river

英語での「 sell somebody down the river」の定義と意味

to sell somebody down the river
01

to be unfaithful or disloyal to someone so as to gain profit oneself 

to [sell] {sb} down the river definition and meaning
非難的
慣用句
くだけた
He sold his partner down the river to get a better deal for himself. 
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