inclement
Word family
Synonym discussion
Sense: adjective/1
For weather, inclement is a formal word for conditions that make being outside unpleasant or risky, especially when cold, wind, or rain combine. Stormy is narrower and usually points to strong wind, thunder, or heavy rain rather than bad weather in general. Harsh is broader and can describe winter, desert heat, or living conditions as well as weather. Severe is stronger still and often suggests danger, official warnings, or real disruption. You might cancel a school trip because of inclement weather, describe a night of thunder as stormy, call a northern winter harsh, or hear that a severe storm is approaching the coast.
Etymology
'Inclement' comes from Latin 'inclemens', meaning not gentle, harsh, or unmerciful. It is built from the negative prefix 'in-' and a root related to 'clemens', meaning mild or merciful. English kept both sides of that older idea, so the word can still describe rough weather as well as severe treatment.