Tempestuous describes something wildly stormy, turbulent, or intensely emotional.

A tempestuous ocean churns with huge waves and howling winds. A tempestuous relationship between two friends might involve dramatic arguments one day and heartfelt apologies the next, swinging between extremes. Someone with a tempestuous personality reacts to situations with intense emotion, perhaps shouting in anger or celebrating with wild enthusiasm.

The word implies chaos, volatility, and dramatic intensity. A student might have a bad day, but a tempestuous argument in the cafeteria involves shouting, tears, and everyone taking sides. Weather forecasters might warn of tempestuous conditions when storms threaten to cause serious damage.

You'll often see tempestuous used in literature to describe characters or situations full of passion and conflict. Shakespeare's play The Tempest takes its name from the storm that shipwrecks the characters, setting the whole drama in motion. When you see tempestuous, picture the raw power of a storm: beautiful perhaps, but definitely not calm.