densely russian
- гу́сто- thickly, densely 
- густонаселённый- densely populated, populous 
- ску́ченно- densely, in density, in congestion 
Examples
- Юго-восто́чный регио́н А́нглии густонаселен.The South East region of England is densely populated.
thickly, densely
densely populated, populous
densely, in density, in congestion