sphinxlike

They all looked eagerly at the criminologist on his return, but his face was sphinxlike.

But Burr, who was in New York, could not easily be communicated with and kept his sphinxlike silence.

Good and evil is the challenging riddle which life places sphinxlike before every intelligence.

Master then sat sphinxlike in an unrelenting silence, punctuated by the boy's sobs for mercy.

But I really came to ask you to do something for me, Miss Roscoe, she smiled at the sphinxlike figure.