spilled ink

Verb

spill ink (third-person singular simple present spills ink, present participle spilling ink, simple past and past participle spilled ink or spilt ink)

1. (idiomatic) To write, especially professionally.
   • Of all the problems which lie on the borderline of philosophy and science, perhaps none has caused more spilled ink, more controversy, and more emotion than "the problem of the direction of time.1974, J Earman, “An Attempt to Add a Little Direction to "The Problem of the Direction of Time"”, in Philosophy of Science