It sounds terrifying and for project managers it really is: scope creep is when your project starts to exceed its initial scope — often due to factors outside of your control. Sometimes you realize more work is needed than you initially thought. Other times you may run into unforeseen issues. But often, it’s just stakeholders or clients requesting extensive changes or additional deliverables. You always want to address scope creep as soon as possible and, where it is in your control, nip it in the bud.