Definition of uncling in US English:

uncling

verb

  • 1no object To relax a hold or grip.

  • 2with object To loosen the hold or grasp of (fingers, arms, etc.); to cause (a thing) to stop clinging.

Origin

Mid 17th century; earliest use found in John Milton (1608–1674), poet and polemicist. From un- + cling.