unexplainedun‧ex‧plained /ˌʌnɪkˈspleɪnd◂/ adjective 
- For years, Sukhbir's death remained unexplained.
- He wants to move to Georgia for some unexplained reason.
- The death of his first wife remains unexplained.
- There had been three unexplained fires at the school in the previous six months.
- About six months after Mr Reynolds' first premonition, he experienced unexplained noises, mainly thumping and banging.
- I looked at her across the counter and tried to detect some glimmer of unexplained Highland intuition.
- In 1978, in Providence, Rhode Island, disturbances broke out after an unexplained murder of a black man by police.
- Next day Jack pondered the mystery of the unexplained footsteps and laid plans to catch the intruder.
- On one occasion excreta was placed in the fridge and there was an unexplained minor fire.
- Science should explain the observed, not deny the unexplained.
- The court may then find that, if unexplained, it is irrational.
something that has never been solved► unsolved · All too often, crimes of violence are left unsolved.· What happened to the men on the expedition will always be an unsolved mystery.
► unexplained an event or fact that is unexplained has never been explained so no one knows exactly what happened: · For years, Sukhbir's death remained unexplained.· There had been three unexplained fires at the school in the previous six months.
► an unexplained absence· Did he give a reason for his unexplained absence?
NOUN► reason· Even films being co-produced with state-owned companies and the military were held up or banned for unexplained reasons.
adjectiveunexplainedexplanatoryexplicable ≠ inexplicablenounexplainingexplanationverbexplainadverbinexplicably
patients with unexplained symptoms