Argus-eyed

having keen eyes; vigilant; watchful.
historical examples

and that was the question that stared, argus-eyed, at jane blair.
the innocent adventuress mary hastings bradley

her old nurse was argus-eyed; and our meetings were such as only lovers can effect.
carmen ariza charles francis stocking

then from a short flight of inconceivable bliss, she fell, shot by one of her hundred argus-eyed fears.
the ordeal of richard feverel, complete george meredith

but to prevent disappointment we ought to mention that this phenomenon can only be witnessed by the argus-eyed.
punch, or the london charivari, vol. 152, march 7, 1917. various

it was the on-coming of a grisly, striped, argus-eyed multiped, with fifty heads.
the red debt everett macdonald

and with a “well,” and a white-lipped smile and a glance at the argus-eyed hotel, she held out her hand to me.
the p-ssionate friends herbert george wells

the intervening sea is one over which the most penetrating of argus-eyed policemen or sheriffs, can not see.
punchinello, vol. 1, no. 2, april 9, 1870 various

those agency employes were argus-eyed, watching each move made by him and his -ssistants.
oswald langdon carson jay lee

slow and sure with such an argus-eyed charmer must be all my movements.
clarissa, volume 4 (of 9) samuel richardson

then from a short flight of inconceivable bliss, she fell, shot by one on her hundred argus-eyed fears.
the ordeal of richard feverel george meredith

adjective
keen-sighted; observant; vigilant