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валовой
背信弃义的 bèi xìn de
perfidious [pəˈfıdıəs] ADJ form
perfidious
bèi xìn de
perfidious
不忠 bùzhōngde
▶ perfidiously ADV
▶ perfidiousness N
PONS OpenDict

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Monolingual examples (not verified by PONS Editors)
Those who gloated over such perfidious endorsements in the past always gnashed their teeth at the polls.
thenewsnigeria.com.ng
We indicated that since the party has followed that perfidious direction, we are leaders of the people.
www.vanguardngr.com
Initially, this slick-haired knight seems just as smug and perfidious as the rest of the clan, completely devoid of honour and scruples.
www.telegraph.co.uk
The perfidious attack of the internet freedom brigands have created a threat to our country.
www.dailysquib.co.uk
He picked and pocketed a pretty prize, performing perfidious behaviour.
flavorwire.com