無味

tasteless / odorless

not to have / no / none / not / to lack / un- / -less

taste / smell / (fig.) (noun suffix) feel / quality / sense / (TCM) classifier for ingredients of a medicine prescription

dull / insipid

tedious / dreary

see 食之無味，棄之可惜|食之无味，弃之可惜[shi2 zhi1 wu2 wei4 , qi4 zhi1 ke3 xi1]

lit. to be hardly worth eating, but it would still be a pity to discard it (idiom) / fig. some things have little to no value, yet one is still reluctant to part with them