"Put a line through" is a phrase that refers to crossing out or canceling something. There are several synonyms for this phrase, such as strike out, delete, scratch out, cross off, mark off, and cancel. These synonyms essentially convey the same meaning as the original phrase 'put a line through,' by indicating that something has been deemed irrelevant or no longer necessary. Such phrases are commonly used in document editing, to indicate that a particular sentence or passage has been rejected or modified. By using any of these synonyms, you can convey the same meaning in different words, providing variety and clarity in your writing.