Ms. Starr said the head was removed from display last September "when there was sufficient doubt to warrant a thorough investigation."

President Johnson found there was sufficient doubt about his participation in the conspiracy to pardon him as well.

But the jury obviously concluded that whatever doubts there were did not rise to the level of "reasonable doubt" sufficient to win the defendant's acquittal.

This time, however, you've raised sufficient doubt in my mind that I think we should bend the rules a little.

And after reading the testimony and reviewing the tape, I had sufficient doubts in my own mind.

There is some speculation that it was in Londontowne, Maryland, but sufficient doubt remains.

But he said personal appeals by the juror, Gene E. Stinnett, had "provided sufficient doubt as to the veracity" of the defense counsel.

Firstly, if more than one explanation could reasonably account for an apparent effect then sufficient doubt remains.

The writer would not expect his victim to believe it, but he would anticipate arousing sufficient doubt to ensure the test being applied.

There's never sufficient doubt about who is the villain.