Go back on (one’s) word

Do you know the English expression “to go back on (one’s) word“? Read the conversation below. Can you guess the meaning?

Rob: The boss promised to pay me more money this year, but when I asked him about it last week, he said he’s decided not to do it.

Fran: He’s like that. He always goes back on his word. That’s why no one likes him.

Does it mean:

a) say something again

b) break a promise

c) say something many times

d) say something backwards

The answer is below!↓

silver and gold coins

Photo by Pixabay on Pexels.com

 

Answer: b) break a promise