Definition of uncling in English:
uncling
verb (ˌ)ʌŋˈklɪŋ(ˌ)ʌnˈklɪŋ
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.