2 synonym groups for Eintönig

insipid, bland, dull, lifeless, flat, uninteresting, uninspired, colorless, mundane, tedious, monotonous, stale, prosaic, lackluster, spiritless, empty, unexciting, drab, unoriginal, commonplace, ordinary, routine, unvaried, humdrum, trivial, pedestrian, banal, flatulent, vapidly, vapidity, insipidity, unremarkable, forgettable, unappealing, uninviting, dreary, wearisome, tiresome, unengaging, uninspiring, lifelessly, vapidness, blandness, dullness, colorlessness, monotony, tedium, mediocrity, sameness [x]

tedium, sameness, repetitiveness, uniformity, routine, boredom, dullness, dreariness, ennui, humdrum, flatness, tediousness, banality, weariness, monotone, unvariedness, lack of variety, prosaicness, unchangingness, invariability, unvaryingness [x]