to stop trusting someone
потерять веру в кого-то (poteryat' veru v kogo-to)
"After what he did, I’ve completely lost faith in him."
"После того, что он сделал, я полностью потерял веру в него." (posle togo, chto on sdelal, ya polnost'yu poteryal veru v nego)
someone who has influence in the selection or appointment of...
to fail to understand the main idea
to follow the official policies or opinions of one’s politic...
not easily fooled; experienced and smart
deeply in love
To try something despite uncertainty.