226 dull synonyms include uninteresting, boring, tedious, tiresome, wearisome, dry, dry as dust, flat, bland, and characterless. Dull is an adjective, and its antonyms are sunny and bright. Here are some additional synonyms for "dull" with example sentences.
226 other ways to say dull.
His speech was long and dull.
I have a dull ache in my back.
The knife blade is dull now.