You would have had the grave suspicions of pat laughed.
I think it only fair to say that a certain man is now under grave suspicion, and we hope to arrest him very soon.
For legions of fans around the world, such grave suspicions meant little.
"I have the gravest suspicions of you sometimes," said the doctor.
You must know that any one who has a perfect alibi is always open to grave suspicion.
In particular the whole idea of a Prime Minister was looked on with the gravest suspicion.
At this period his brethren regarded him with grave suspicion.
The gravest suspicions are in order as to whether there ever was a Dukakis campaign at all.
"Your action in doing that is open to grave suspicion."
If I had been a burglar she could not have regarded me with graver suspicions.