tiresome

Synonyms: a bit much annoying arduous boresome boring burdensome demanding difficult drag dragging drudging dull enervative exacting exhausting fatiguing flat hard heavy hefty ho-hum humdrum irksome jading laborious monotonous nowhere onerous oppressive strenuous tedious tired tiring too much tough trying uncool uninteresting unrelieved vexatious wearing wearisome wearying yawn

Antonyms: easy facile fun nice stimulating