This is the 9453rd most frequent Russian word.
уск
The Russian word "уск" is not a standalone word; it is typically a root or part of other words. Its exact meaning depends on the context.
In this sentence, 'ускользнула' is derived from 'ускользнуть', meaning 'to slip or escape'. It indicates the act of slipping away or eluding.
Кайма ускользнула из его рук.
The edge slipped from his hands.
Here, 'ускорающая' stems from 'ускорять', meaning 'to accelerate or hasten'. It is used to describe something that increases speed.
Его ускорающая речь показалась запутанной.
His accelerating speech seemed confusing.
The word 'ускок' refers to the act of jumping or leaping as part of movement or reaction.