1. superlative form of arid; extremely dry, with little or no rainfall
Usage: superlative degree
2. superlative form of arid; dull and uninteresting; lacking liveliness or imagination
Usage: superlative degree; figurative

Examples

• The Sahara is one of the aridest regions on Earth.
• Death Valley is the aridest place in North America.
• His aridest lectures put half the class to sleep.
• The aridest parts of the desert receive almost no rainfall.
• She found his writing style the aridest of all the authors assigned.
• The aridest climate zones support very little vegetation.