unthrowable
adjUS /ʌnˈθɹoʊ.ə.bəl/
Etymology From un- + throwable.
1
That cannot be thrown.
- DYSART: ... And after the service kneels to a slave who stands over him obviously and unthrowably his master. With my body I thee worship! ...1973, Peter Shaffer, “Act II, Scene 25”, in Equus, page 79: