If something slipped through the cracks it means that it was missed or overlooked, usually because of a mistake or a gap in a system. It describes a situation where something should have been handled but was accidentally ignored.
The expression comes from the image of something small falling through cracks in a floor or between boards and disappearing from sight.
The expression comes from the image of something small falling through cracks in a floor or between boards and disappearing from sight.
My application slipped through the cracks and was never reviewed.