tasteless (adj.)
- arid
- barbarian
- barbaric
- barbarous
- barren
- base
- bland
- blank
- bloodless
- boorish
- cacophonous
- changeable
- characterless
- cheap
- chintzy
- clumsy
- coarse
- cold
- colorless
- crude
- dead
- dilute
- diluted
- dismal
- distasteful
- dreary
- dry
- dull
- dusty
- dysphemistic
- effete
- elephantine
- empty
- etiolated
- flashy
- flat
- flavorless
- garish
- gauche
- gaudy
- graceless
- gross
- halfhearted
- harsh
- heavy
- ho-hum
- hollow
- improper
- impure
- inane
- inappropriate
- incorrect
- indecent
- indecisive
- indecorous
- indelicate
- indifferent
- inelegant
- infelicitous
- insipid
- irresolute
- jejune
- leaden
- lifeless
- loud
- low
- low-spirited
- maladroit
- meretricious
- mild
- milky
- mushy
- neutral
- offensive
- outlandish
- pale
- pallid
- pedestrian
- plodding
- pointless
- poky
- ponderous
- pulpy
- rude
- sapless
- savorless
- slow
- solemn
- spiritless
- stale
- sterile
- stiff
- stodgy
- stuffy
- superficial
- tawdry
- tedious
- thin
- unaesthetic
- unappetizing
- unbecoming
- uncouth
- uncultivated
- uncultured
- undignified
- unfitting
- unflavored
- ungraceful
- uninteresting
- unpolished
- unrefined
- unsavory
- unseemly
- unsuitable
- vapid
- vulgar
- washy
- watered
- watery
- weak
- wild
- wishy-washy
- wooden
- wrong
