Keep (one) guessing American British informal verb phrase
Make someone uncertain about your plans or what is going to happen by withholding information
I don't know what the boss's plan is because he just keep people guessing.
The book will keep you guessing and throws you for a loop.
To waver between two opposing opinions about something or someone
Used to describe something which is uncertain.
To keep someone waiting for your decision.
To be deserted or to be located in a remote or lesser-known region.
The verb "keep" should be conjugated according to its tense.