1. superlative form of drought; experiencing the most severe or prolonged lack of rainfall or water
Usage: superlative degree of 'droughty' or 'drought-stricken'

Examples

• The droughtiest regions of the country struggled with water shortages.
• This summer was the droughtiest on record for the state.
• Farmers in the droughtiest areas had to rely on irrigation.
• The droughtiest months typically occur in late summer.
• Climate change has made some regions droughtiest than ever before.