The term 'ulterior motives, perhaps' can be summarized as hidden AGENDAS or secret intentions. This phrase is often used to describe the underlying reasons behind a person's actions, which may not be immediately apparent. The crossword solution for this term is 'AGENDAS, ' which refers to a plan of action or a list of goals that someone may have. AGENDAS are often used to refer to the motivations behind a person's decisions and actions.