I made sure of meeting Natalie there, and perhaps even of finding an opportunity of speaking to her unobserved by her father.
He stood in the square and waited for a chance to slip in unobserved.
Mrs. Dillon started and turned pale as the door softly opened, and Annorah herself, unobserved by the priest, came in.
Then he looked round at the half-filled canteen to see that he was unobserved.
His countenance during that brief glance was unobserved, but you might have read there something sinister and cruel.
Come into the stateroom, where we can be unobserved, and show them to me.
In this laborious task Saumarez was the patient, unobserved pioneer.
Unfortunately their return was not, like their arrival, unobserved.
We were solicitous to pass them unobserved and pushed on towards a stopping place, which we might reach at twelve o'clock.
It was absolutely necessary that their passage be unknown and unobserved.
late 14c., "to hold to" (a manner of life or course of conduct), from Old French observer, osserver "to observe, watch over, follow" (10c.), from Latin observare "watch over, note, heed, look to, attend to, guard, regard, comply with," from ob "over" (see ob-) + servare "to watch, keep safe," from PIE root *ser- "to protect." Meaning "to attend to in practice, to keep, follow" is attested from late 14c. Sense of "watch, perceive, notice" is 1560s, via notion of "see and note omens." Meaning "to say by way of remark" is from c.1600. Related: Observed; observing.