Synonyms of tedious

1 Syllable

slow, bland, dull, drab, dry

2 Syllables

prosaic, yawner, stodgy, poky, nagging, annoying, snooze, banal, lengthy, singsong, blandest, ho-hum, dismal, drudging, lengthier, wordier, prolix, hohum, dragging, drearier, dragger, boring, endless, dreary, tiring, duller, painful, proser, dusty, dullest, blander, arid, smarting, humdrum, draggy, prosy, mortal, prosier, sing-song, taxing, longish, wordy, vapid, stodgier

3 Syllables

hicksville, insipid, bromidic, irksome, exhausting, long-drawn-out, fatiguing, weariful, lifeless, pleonastic, pabulum, dullsville, laborious, samely, unvaried, prolonged, flatulent, verbose, toneless

4 Syllables

unexciting, tautologous, periphrastic, tiresome, soporific, milk-and-water, boresome, uninflected, monotonous, wearisome, unenjoyable, enervating, uneventful, characterless

5 Syllables

unanimated, unstimulating, enervative, uninteresting, unentertaining

7 Syllables

unimaginative