hollow

The central image is a shell without a core. It describes something that looks complete from the outside but is empty or missing its vital center on the inside. In physical contexts, it suggests lightness, fragility, or a space designed for storage or shelter. There is often a sense of echoing or resonance associated with physical hollowness. When applied to emotions or speech, it carries a strong negative connotation of falseness. A "hollow" promise or apology isn't just empty; it feels deceptive because the expected weight of sincerity is missing. It differs from "fake" by implying that the form of the gesture is present, but the substance is gone. As an action, it implies a deliberate process of excavation or removal to create a void.