lacking imagination having the characteristics of prose 
WordReference Random House Learner's Dictionary of American English © 2025
pro•sa•ic /proʊˈzeɪɪk/USA pronunciation  also proˈsa•i•cal, 
adj. 
WordReference Random House Unabridged Dictionary of American English © 2025- commonplace or dull;
matter-of-fact;
not imaginative:a prosaic mind. 
pro•sa•ic 
(prō zā′ik),USA pronunciation adj. 
 pro•sa′i•cal•ly, adv. 
pro•sa′ic•ness, n.
 
- commonplace or dull;
matter-of-fact or unimaginative:a prosaic mind. - of or having the character or form of prose rather than poetry.
 
- Late Latin prōsaicus. See prose, -ic 1650–60
 
pro•sa′ic•ness, n.
- 1.See corresponding entry in Unabridged ordinary, everyday; vapid, humdrum, tedious, tiresome, uninteresting.
 
Collins Concise English Dictionary © HarperCollins Publishers::
'prosaic' also found in these entries (note: many are not synonyms or translations):
electric
 - flat
 - literal
 - literal-minded
 - matter of fact
 - paradisaical
 - pedestrian
 - pedestrianism
 - practical
 - prosaism
 - prosaist
 - prose
 - prosy
 - sensational
 - stodgy
 - vapid
 - wearisome
 - workaday