Related Clues:
- Empty nutshell with middle half missing
- Greek character had lines that were void
- New university students amounting to nothing
- Invalid, victim of infectious disease initially
- Whole lot of nothing
- Cancelled openings of new university law libraries
- Ineffectual and useless lecturer initially probing confines of novel
- Make null
- Northern university students, void
- and void
- No longer enforceable
- Word on a check that's no good anymore
- Deep space, basically
- Like sets with no elements
- Null and