The term "laying line" typically refers to the act of placing or positioning a rope or cable in a specific location or direction. Some possible antonyms for this term might include words such as removing, detaching, disconnecting, or dislodging, which all suggest the opposite of placing or positioning. Other antonyms might include words like ignoring, neglecting, overlooking, or disregarding, which imply a lack of attention or effort towards the task of positioning the line. Ultimately, the most appropriate antonym for "laying line" will depend on the specific context and intended meaning of the phrase.