This is the 9508th most frequent Russian word.
участились
"Участились" means "became more frequent."
Here, 'участились' refers to the increase in frequency of certain events or occurrences.
В последнее время участились случаи отключения электричества.
Recently, there have been more frequent instances of power outages.
In this context, 'участились' describes the heightened occurrence of illnesses due to seasonal changes.
С наступлением холодов участились простудные заболевания.
With the onset of cold weather, there has been an increase in colds.
The word 'участились' here indicates the increased frequency of road accidents attributed to the icy road conditions.