hidden agenda

noun
UK /ˌhɪd.ən əˈdʒen.də/
US /ˌhɪd.ən əˈdʒen.də/

A secret plan that someone keeps hidden from others.

The teacher suspected a hidden agenda when the students suddenly offered to clean the classroom.


OTHER MEANINGS

2. A private reason for doing something that is not the reason you tell people.

He said he just wanted to help, but I think there was a hidden agenda.

3. A secret list of things a group wants to achieve without telling anyone.

The club was accused of having a hidden agenda to change the school rules.

4. An unspoken goal behind a public action or statement.

The meeting seemed friendly, but everyone wondered about the hidden agenda.