fiddle with (something)

Translations
возиться с (чем-то)
She likes to fiddle with her hair when she is nervous.
Она любит возиться со своими волосами, когда нервничает.
Definitions
To handle or manipulate something in a casual or aimless manner, often involving small adjustments or changes.
Words
fiddle

verb
возиться
with

preposition
с
something

pronoun
чем-то