Deutsch-Englisch Übersetzung für stumpfsinnig

dull
us
All these knives are dullHe sat through the dull lecture and barely stayed awakeWhen does having a dull personality ever get you a girlfriend? Even if you get one, how does being dull help you keep a relationship for over a year?
insipid
us
The diners were disappointed with the plain, insipid soup they were servedThe textbook had a most insipid presentation of the controversy