lid·less 
(lĭdlĭs)
(lĭdlĭs)adj.
1. Having no lid or lids.
2. Archaic Watchful; vigilant. Used of an eye or eyes.
- systaltic
- system
- system administrator
- systematic
- systematical
- systematically
- systematics
- systematism
- systematist
- systematization
- systematize
- systematizer
- systemic
- systemically
- systemic circulation
- systemic lupus erythematosus
- systemization
- systemize
- systemizer
- system operator
- systems analysis
- systems analyst
- systems biology
- systems programming
- systole