slippingгерундий или причастие настоящего времени Used attributively and predicatively to denote something that is deteriorating or losing position.
Определения
Gradually declining in quality, performance, or condition. His slipping grades worried his parents.
Failing to engage or hold as intended, especially of machinery; losing grip or traction The mechanic diagnosed the problem as a slipping clutch.
Синонимы
losing ground
slipping away