IPA: /ˈkoʊliər/
KK: /ˈkoʊliər/
Relating to or resembling coal; having the characteristics of coal.
The coalier regions of the country are known for their rich deposits of fossil fuels.
Comparative: coalier
Superlative: coalier
The word 'coalier' comes from the Old French 'coallier', meaning 'to make coal' or 'to burn coal'. It refers to a person who works with coal, particularly in the context of mining or selling coal.
Think of someone who 'makes coal' or works with it — that's what a coalier does.