unclear
verbEtymology From Middle English unclere, equivalent to un- + clear. Compare Saterland Frisian uunkloor (“unclear”), West Frisian ûnklear (“inoperative, broken”), Dutch onklaar (“out of order, defective, broken”), German unklar (“unclear”), Danish uklar (“unclear”), Swedish oklar (“unclear”).
Rare To undo the process of clearing.
- Clearing, unclearing and deleting activities1998, Jeffrey J. Mayer, ACT! 4 for Windows for Dummies, page xx:
- […] finally [the block] would be cleared and remain that way until moved. Although this clearing and unclearing can occur repeatedly, the current BAGGER algorithm is unable to generalize number within unwindable subproofs.2012, Gerald DeJong, Investigating Explanation-Based Learning, page 108: