an unrealistic or impossible hope
un espoir irréaliste ou impossible (un espoir irréaliste ou impossible)
"Becoming a billionaire overnight is just a pipe dream."
"Devenir milliardaire du jour au lendemain n'est qu'un rêve irréaliste." (devenir milliardaire du jour au lendemain n'est qu'un rêve irréaliste.)
when the situation becomes very difficult or challenging
to accept or take on a responsibility
to succeed brilliantly or achieve something with excellence
to forget or stop being aware of something
to search for information in a curious way
to make someone feel happier