un·seal 
/ˌʌnˈsi:l/ verb
un·seals; un·sealed; un·seal·ing /ˌʌnˈsi:l/ verb [+ obj] : to open (something) by breaking or removing a seal
▪ She unsealed the envelope. ▪ The court unsealed the documents in the Douglas trial today.
▪ She unsealed the envelope. ▪ The court unsealed the documents in the Douglas trial today.
— unsealed adjective
▪ an unsealed envelope [=an envelope that is not sealed]
▪ an unsealed envelope [=an envelope that is not sealed]
