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False friends are much worse than open enemies
false friends (tend|prove) to be (much|far|way|) worse than open enemies
false friends can be (much|far|way|) worse than open enemies
false friends are much worse than open enemies
01
used to imply that it is more dangerous to have friends who pretend to be loyal while secretly betraying you than to have enemies who are open about their hostility towards you
Proverb
Пример
When she found out that her best friend had been spreading malicious rumors about her, she realized that false friends are worse than open enemies.