Synonyms:
warily
Meaning: in a wary manner; "the sailor watched the sky warily"
Usage examples
"Would you keep a hold on his arm, sir, just in case," the soldier said, glancing warily at Ulv's blowpipe.
So he bathed his hot face, took a cool drink, and lay on the moss, staring up into the green gloom of the pines, blissfully dreaming of the joys of a hunter's life,--till a peculiar cry startled him to his feet, and sent him creeping warily toward the sound.