[{"Bold_text": "adjective", "List Items": ["lying or situated beneath, as a substratum.", "fundamental; basic:the underlying cause of their discontent.", "implicit; discoverable only by close scrutiny or analysis:an underlying seriousness in his witticisms.", "(of a claim, mortgage, etc.) taking precedence; anterior; prior.", "Linguistics.belonging to an earlier stage in the transformational derivation of a sentence or other structure; belonging to the deep structure."]}]