
1) Admitting less light 2) Comparatively compact 3) Comparatively thick-skulled 4) Harder to cut through 5) Lead, compared to tin 6) Less astute 7) Less clear 8) Less likely to be in mensa 9) Less sparse 10) Letting less light through 11) More closely populated 12) More compact 13) More compressed 14) More concentrated
Found on
https://www.crosswordclues.com/clue/denser

dense, denser, densest 1. Having the component parts closely compacted together; crowded or compact: a dense forest; dense population. 2. Having relatively high density; as with, being rowded closely together; compact: a dense population. 3. Hard to penetrate; thick: a dense jungle. 4. Permitting little light to pass through, because of compactnes...
Found on
http://www.wordinfo.info/words/index/info/view_unit/631/
No exact match found.