B1
something which shows that something is happening or that it exists or is true
Dictionary examples:
The sudden quiet was a sign that the kids were up to no good. (0.0)
The empty fridge was a sign that Mom hadn't been shopping in weeks. (0.0)
The cat's guilty face was a clear sign it had eaten the goldfish. (0.0)
There is every sign that the worst is over. (16.6)
There was nobody in the place, and I thought that was a bad sign. (19.2)
Allie's work at school has shown signs of improvement. (21.6)
Flowers are the first sign of spring. (24.0)
The fact that he's eating more is a sign that he's feeling better. (32.2)
There's no sign of progress with the construction work. (34.8)
His inability to handle the situation is a sign of weakness. (51.2)