unfunniest
Most humor-deficient
The superlative form of unfunny—the least funny of a group: That was the unfunniest joke I've ever heard.
Often used for emphasis rather than literal comparison, expressing that something meant to be humorous failed completely.
Not entertaining or humorous
- witlessLacking intelligence or sense
- joylessWithout pleasure or gladness
- mirthlessLacking genuine amusement
- deadpanExpressionless, especially for humor
dry · flat · wooden · stiff · stone-faced · unentertaining · groan-worthy · cringe-worthy
Unchangingly dull
- tediousBoring through length
- dullLacking edge or interest
- tiresomeCausing boredom or annoyance
- wearisomeCausing fatigue through monotony
uninteresting · unstimulating · plodding · dreary · soporific · humdrum · repetitive · laborious
No longer fresh
- vapidDull, without depth
- insipidWithout flavor or interest
- banalUnoriginal and dull
- prosaicLacking imagination or excitement
pedestrian · unimaginative · lifeless · lackluster · unoriginal · derivative · hackneyed · clichéd
unamusing
Not entertaining or humorous
- witlessLacking intelligence or sense
- joylessWithout pleasure or gladness
- mirthlessLacking genuine amusement
deadpan · dry · flat · wooden · stiff · stone-faced · unentertaining · groan-worthy · cringe-worthy
monotonous
Unchangingly dull
wearisome · uninteresting · unstimulating · plodding · dreary · soporific · humdrum · repetitive · laborious · irksome
stale
No longer fresh
prosaic · pedestrian · unimaginative · lifeless · lackluster · unoriginal · derivative · hackneyed · clichéd · trite