1. not joined or linked together

Similar word(s): apart, isolated, obscure, asternal, detached, separated, disjoined, separate, exploded, unattached, uncoupled, unrelated

2. not connected by birth or family

Similar word(s): unrelated

3. lacking orderly continuity

Similar word(s): incoherent, confused, disconnected, disjointed, disordered, garbled, illogical, scattered

Sentences with unconnected as an adjective:

- The light wouldn't work because the cable was unconnected.

- He talked in an unconnected series of short sentences.