unwitnessed

American  

[uhn-wit-nist] / ʌnˈwɪt nɪst /

adjective

1. lacking the signature of a witness.

   an unwitnessed legal document.

2. not perceived by the senses; not noticed or observed.

   unwitnessed everyday occurrences.

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unwitnessed British  

/ ʌnˈwɪtnɪst /

adjective

1. without the signature or attestation of a witness

2. not seen or observed

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Etymology

Origin of unwitnessed

late Middle English word dating back to 1375–1425; un- ¹, witness, -ed ²

Example Sentences

Matt Primomo died of injuries sustained in an “unwitnessed fall” from Icicle Buttress, according to Chelan County Coroner Wayne Harris.

From Seattle Times

In the case of an unwitnessed cardiac arrest, CPR likely wouldn’t be beneficial.

From Slate

“If my cardiac arrest is unwitnessed, with a perceived prolonged downtime and signs of death, there is to be No Trial of CPR.”

From Slate

He explains the two types of cardiac arrest—witnessed and unwitnessed—and gives recommendations accordingly: Given that I’m healthy, if I go into cardiac arrest and there are witnesses, I likely want people to do anything they can to resuscitate me.

From Slate

"Our study, although small, offers the first direct evidence that seizures may be responsible for some sudden deaths in children, which are usually unwitnessed during sleep," said study lead investigator Laura Gould, a research assistant professor at NYU Langone.

From Science Daily