unjoin
/ˌʌnˈdʒɔɪn/Definitions
1. verb
to come apart or separate; to disconnect or disengage
“The torn pages of the book began to unjoin as I touched them.”
2. verb
to withdraw or leave a group or association
“He decided to unjoin the club after the dispute with the president.”
3. noun
the act of separating or disconnecting
“The unjoin of the wires caused the entire system to crash.”
4. noun
a part that has become separated or disconnected
“The unjoin of the thread caused the entire seam to unravel.”