1) Become unconnected 2) Detach 3) Disjoint 4) Disunite 5) Divide 6) Part 7) Separate 8) Split into two 9) To become separated 10) To disunite 11) To separate 12) Undo the joining of 1) Detach 2) Separate 
• (v. t.) To part; to disunite; to separate; to sunder. • (v. i.) To become separated; to part.
Dis·join' intransitive verb To become separated; to part. Dis·join' (dĭs*join') transitive verb [ imperfect & past participle Disjoined (-joind'); present participle & verbal noun Disjoining .] [ Old French desjoindre , French disjoindre , déjoindre , from Latin 
[v] - make disjoint, separated, or disconnected 2. [v] - become separated, disconnected or disjoint
disjoint verb become separated, disconnected or disjoint
to undo or prevent the junction or union of; disunite; separate.