argus

"In Greek mythology, Argus was tasked with guarding Io."

"The term 'Argus-eyed' refers to someone who is very observant."

"The statue of Argus stood prominently in the museum, symbolizing vigilance."

"She kept an argus eye on the children while they played outside."

"The argus surveillance system ensured that nothing went unnoticed."

"His argus demeanor made everyone feel a bit uneasy."