(of food) with very little taste

tasteless; indistinctive

(of a person, thing) having no definite or outstanding feature (and so not a good example)

undistinguished, commonplace

dull; uninteresting; commonplace

unimaginative

not arranged in a particular order; (of information) not officially secret

undistinguished, commonplace

not enjoyable

boring, uneventful

not entertaining

boring, uneventful

not exciting

dull

dull; ordinary

dull, unoriginal