What are the best answers for “not challenging; dull and lacking excitement”?

commonplace, prosaic, unglamorous.

How many letters does the top answer for “not challenging; dull and lacking excitement” have?

The most common answer is commonplace (11 letters).

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

commonplace 11 letters wn-def

a trite or obvious remark

prosaic 7 letters wn-def

not challenging; dull and lacking excitement

unglamorous 11 letters wn-def

not challenging; dull and lacking excitement