What does it mean to 'underscore' something?

To 'underscore' something means to emphasize or underline it, highlighting its importance or significance in a particular context. This term originates from the literal practice of drawing a line under text to draw attention to it, thus reinforcing the notion that the information is not just noteworthy, but potentially critical to understanding the overall message.

In discussions or arguments, when one underscores a point, they are effectively making it stand out so that the listener or reader recognizes its relevance or urgency. This can help ensure that key ideas are not overlooked and are properly given due weight in the conversation.

Other options do not appropriately capture the essence of 'underscore.' Taking legal possession, vanishing quickly, or submitting humbly do not convey the act of emphasizing or highlighting something, which is the core meaning conveyed by the term.