suspect

1. VERB

You use suspect when you are stating something that you believe is probably true, in order to make it sound less strong or direct.

• I suspect they were right.     
• The above complaints are, I suspect, just the tip of the iceberg.     
• Do women really share such stupid jokes? We suspect not.

cf:

2. VERB

If you suspect that something dishonest or unpleasant has been done, you believe that it has probably been done. If you suspect someone of doing an action of this kind, you believe that they probably did it.

• He suspected that the woman staying in the flat above was using heroin.     
• It was perfectly all right, he said, because the police had not suspected him of anything. 
• You don't really think Webb suspects you?     
• Frears was rushed to hospital with a suspected heart attack.

... Cobuild