Which preposition to use with furtive

about Occurrences 5%

There was something furtive about this intruder, and at the same time familiar to Paul, who peered at him through the gloom.

in Occurrences 2%

Had there been anyone to see, (which there was not), they might have noticed something almost furtive in his manner of approach, for he walked always under the trees where the shadows lay thickest, and paused, once or twice, to look about him warily.

than Occurrences 1%

His furtive eyes became more furtive than ever.

Which preposition to use with  furtive