Boring and tedious; completely uninteresting.
Examples:
- That lecture was dull as dishwater.
Origin: Original simile 'dull as ditchwater' from 1700s; became 'dishwater' in first half of 1900s.
Boring and tedious; completely uninteresting.
Examples:
Origin: Original simile 'dull as ditchwater' from 1700s; became 'dishwater' in first half of 1900s.