without taste or flavour, without interest, spirit

dull, uninteresting

dull; not shiny or glossy

dull, lifeless

gentle; not severe

gentle, temperate, non-irritating

(uninteresting because) unchanging, without variety

all the same, remaining the same

dull; uninteresting; commonplace

unimaginative

an informal meeting of friends to sing songs together

all the same, remaining the same

dark; gloomy

dull, lifeless

long, tiring and not interesting

dull, monotonous

annoying

irritating, exasperating