unthought
That which has not been (yet) thought; that which has yet to enter into the mind; a non-existent thought.
But without his knowing, they interfere with his research and at the very least call on him to put the results in perspective. This is what we call the “unthoughts” of scientific work.
Where it comes from
From un- + thought. Compare Old English unþanc (“disfavour, displeasure, anger, ill-will”).
Adapted from the Wiktionary entry unthought (CC BY-SA 4.0).