adjective
- superlative form of coaly; most resembling, containing, or covered with coal
Usage: superlative degree; informal
Examples
- The coaliest deposits in the region were found near the old mining site.
- After the fire, the coaliest residue covered the entire hearth.
- This is the coaliest sample we've collected from the mine.
- The coaliest dust settled on every surface in the factory.
- Of all the rock formations, this one appeared the coaliest.