This is the 571st most frequent Finnish word.
epäillään
"Is suspected."
In this sentence, 'epäillään' is the passive form of the verb 'epäillä', indicating that someone (the subject) is being suspected (by an implied agent).
Häntä epäillään rikoksesta.
He/she is suspected of a crime.
Here, 'epäillään' is used impersonally to suggest doubt or suspicion about the question's difficulty (general observation).
Kysymys epäillään olevan vaikea vastata.
The question is suspected to be difficult to answer.
In this use, 'epäillään' conveys the idea that the motives (of the person) are being doubted or questioned.