under observation

Subject to surveillance

Under observation describes someone or something being monitored or watched closely.

A patient kept under observation in a hospital is being checked regularly for changes in condition: They're keeping her under observation overnight.

A suspect under observation is being surveilled by authorities.

The phrase implies systematic watching rather than casual attention.

Related

scrutiny · eagle eye · examined · tracked · inspected · hospital · quarantine · suspect · microscope · lens · detective · private eye · waiting · clinical · specimen · lab rat · test subject · study

Opposites
surveillance/monitoring status

under observationunmonitored

Not under observation

unwatched · unsupervised · off the radar · untracked · flying under the radar

privacy/visibility

under observationin private

Not publicly observed

hidden · concealed · incognito · behind closed doors · invisible

medical/clinical context

under observationdischarged

Officially let go

released · cleared · sent home · outpatient

Family

under, observation, observe, observer, observers, observations, observational, observing, observed

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Negative · Everyday, not technical · Rated G