Arousing suspicion.
"is suspicious" is a perfectly acceptable phrase in written English. You can use it to describe a situation or a person whose behavior arouses suspicion or is questionable. For example, "The large amount of money in his possession is suspicious.".
Everybody is suspicious".
Difference is suspicious.
She is suspicious and angry.
So the opposition is suspicious.
"The timing is suspicious.
That really is suspicious.
Now, everyone is suspicious".
Being a terminologist, I care about word choice. Ludwig simply helps me pick the best words for any translation. Five stars!
Maria Pia Montoro
Terminologist and Q/A Analyst @ Translation Centre for the Bodies of the European Union