challenging 11 Associations

thought-provoking stimulating (similar term)

exciting 8 Associations

stimulating (similar term)

exhilarating 12 Associations

stimulating invigorating (similar term)

flat 4 Associations

bland unstimulating (similar term) unexciting (similar term)

piquant 7 Associations

salty stimulating (similar term)

rousing 7 Associations

stirring stimulating (similar term)

salty 5 Associations

piquant stimulating (similar term)