dry-as-dust

or dry·as·dust

[ drahy-uh z-duhst ]
/ ˈdraɪ əzˈdʌst /

adjective

dull and boring: a dry-as-dust biography.

Origin of dry-as-dust

1870–75; after Dr. Dryasdust, a fictitious pedant satirized in the prefaces of Sir Walter Scott's novels

Idioms and Phrases with dry as dust

dry as dust

Dull, boring, as in This text is dry as dust; it's putting me to sleep. [c. 1500]