The term "under lines" implies a sense of emphasis or highlighting in written text, but there are several antonyms that can convey the opposite meaning. One antonym is "erase," which suggests the removal or erasure of any markings or lines on a page. Another antonym is "ignore," meaning to purposely not pay attention to or neglect any specific lines or words. While "overlook" also suggests a lack of attention, it can also mean to view something from a higher perspective, overshadowing any lines that may exist. Finally, "obliterate" implies a complete and thorough destruction, leaving no traces of any lines or markings behind.