That is the correct spelling of the adjective "coarser" (rougher, less fine).
Coarse is better. You could say "More coarse", but not "More coarser".
the longer the soil partical the coarser it will be
Both are correct. Coarser is better in most cases.
Coarser hair can be recognized by its thicker diameter compared to finer hair strands. It often feels stiffer or rougher to the touch and may have a more noticeable texture. Additionally, coarser hair tends to be less prone to breakage and can appear shinier due to its structural integrity. Observing these characteristics can help distinguish coarser hair from finer types.
false
Coarser Courser Endorser
coarser grained
coarser grained
Sandstone
rougher, coarser
If the texture is coarser, then the surfaces will tend to "catch" more as they try to move. Coarser texture means more friction; finer texture means less.
The comparative form of "coarse" is "coarser." In English grammar, comparatives are used to compare two things, indicating that one has a higher degree of a particular quality than the other. In this case, "coarser" is used when comparing two things that are rough or not fine in texture or quality.