This is the 4773rd most frequent Turkish word.
dolandıran
"Swindler" or "fraudster."
Here, 'dolandıran' is used as a noun (subject) to describe a person who commits fraud.
Dolandıran adam polise yakalandı.
The fraudster was caught by the police.
In this example, 'dolandıran' functions as an adjective, qualifying 'someone' to mean that they are deceitful or fraudulent.
Bu işte dolandıran birinin olduğunu düşünüyorum.
I think there is someone fraudulent involved in this business.
Here, 'dolandıran' is used as a verb participle to indicate the action of deceiving, performed by the subject.