dull, slow, sluggish - (of business) not active or brisk; "business is dull (or slow)"; "a sluggish market" Antonym:active (indirect, via inactive)
inert, sluggish, torpid - slow and apathetic; "she was fat and inert"; "a sluggish worker"; "a mind grown torpid in old age" Antonym:active (indirect, via inactive)