Meaning of the word "all are not friends that speak us fair" in English

What does "all are not friends that speak us fair" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

all are not friends that speak us fair

US /ɔːl ɑːr nɑːt frendz ðæt spiːk ʌs fer/
UK /ɔːl ɑː nɒt frendz ðæt spiːk ʌs feə/
"all are not friends that speak us fair" picture

Idiom

not everyone who acts kindly or says nice things to you is actually a true friend

Example:
Be careful who you trust; all are not friends that speak us fair.
He learned the hard way that all are not friends that speak us fair after his colleague betrayed him.