GRE TOEFL IELTS dull Definition lacking interest or excitement; not sharp or bright. Example "The lecture was so dull that half the class fell asleep." Sign in to save GRE Quiz → TOEFL Quiz → IELTS Quiz → ← dulcet duly → Study tips featuring "dull" Map Each Word Into a Connected Network Audit Your Own Writing for Lexical Resource Force Contrast Between Two Similar Words Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant