1. The feeling of disappointment resulting from the discovery that something is not as good as one believed it to be; loss of illusions or false hopes
Her desilusão was evident when she realized the job wasn't what she had expected.
A desilusão dela era evidente quando percebeu que o trabalho não era o que ela esperava.
2. A state of being disenchanted or disillusioned with something previously idealized
The desilusão with politics grew after the scandal.
A desilusão com a política cresceu após o escândalo.