Dense (5)
'dense' is the definition.
(synonyms)
This is all the clue.
(Other definitions for compact that I've seen before include "Tightly-knit, agreement" , "bargain" , "Dense; agreement" , "An official agreement" , "Close - agreement - make-up case" .)
'dense' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for solid that I've seen before include "Hard; three dimensional" , "Firm - substantial" , "Not hollow, the same throughout" , "Shape with three dimensions" , "Firm - three-dimensional" .)
'dense' is the definition.
(I know that dense can be written as thick)
This is all the clue.
(Other definitions for thick that I've seen before include "Concentrated" , "Wide -- impenetrable" , "deficient in understanding" , "Crowded" , "Stupid (as two short planks?)" .)