How to say "tedious" in Japanese

Choosing the right word
  • 退屈たいくつJLPT N3approx.Common
    na-adjective, nounCovers tedious as dull and uneventful, where time drags because nothing engaging happens. It names the tedium itself, so it fits long stretches — a slow afternoon, a drawn-out task — that leave you bored.
    カクテルパーティーは退屈たいくつなときもある。↗
    Cocktail parties can be boring.
  • うんざりJLPT N1approx.Common
    adverb (with と), suru verbAn onomatopoeic word for the fed-up feeling that tedious things produce: weariness bordering on exasperation once something has gone on long enough. It centers on your reaction rather than on flatly calling a thing dull.
    あの子こにはうんざりする。↗
    The kid is a pain in the neck.
  • くどいJLPT N2approx.Common
    i-adjectiveCovers tedious in the sense of long-winded and repetitious: an explanation, speech, or speaker that belabors the same point until listeners tire of it. It is the word for that wordy, drawn-out sense.
    くどいよ君きみの質問しつもんは、もううるさい。↗
    Stop bugging me with your annoying questions!
  • つまらないJLPT N5approx.Common
    i-adjectiveFor tedious in its plainest sense — dull, uninteresting, boring — as with a movie or lecture that holds no interest. When you simply mean something is boring, this is the word you want.
    That new movie was a bummer.

「つまらない」 and 退屈 cover the plain dull sense (「つまらない」 judges a thing boring, 退屈 names the tedium of time dragging), 「くどい」 is for long-winded repetitiousness, and 「うんざり」 for being fed up.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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