removable
Only three out of five patients with large, unremovable tumours survive more than five years.
They find themselves in a situation where incompetent directors are effectively unremovable.
Security researchers are warning of malware that is proving to be unremovable even after a factory reset.
There may be the option of installing unremovable devices that limit a vehicle's speed.

SMART Vocabulary: related words and phrases

Immobility
anti-jamming
be locked in something
boxed in
budge
cataleptic
frozen
immovably
jam
jammed
lifelessly
lock
motionless
motionlessly
pin
standing
standstill
statically
stationary
stock-still
time stands stillidiom