11
tasteless(adjective, flat)
9
bland
9
flat
9
insipid(adjective, flat)
7
flavorless
7
vapid(adjective, flat)
6
stale
5
dead
5
savorless
4
savourless
4
unseasoned
3
unsavoury
2
dull
2
jejune
2
unpalatable
2
watery
2
wishy-washy
1
compressed
1
mat
1
matt
13 years ago|1.8k views|share |citing 
APASmart Define. (2013). flavourless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/flavourless/thesaurus/synonyms
ChicagoSmart Define. 2013. "flavourless thesaurus" https://smartdefine.org/flavourless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, flavourless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/flavourless/thesaurus/synonyms>.
MLASmart Define. "flavourless thesaurus" 28 June 2013. Web. 21 September 2026. <https://smartdefine.org/flavourless/thesaurus/synonyms>