[もんだい, mondai] (n) problem; question; (P) #132
[せってい, settei] (n, vs) (1) establishment; creation; posing (a problem); setting (movie, novel, etc.); scene; (2) { comp } options or preference settings (in computer software); configuration; assignment; setup; (P) #765
[ぎもん, gimon] (n) question; problem; doubt; guess; (P) #1122
[むずかしい(P);むつかしい, muzukashii (P); mutsukashii] (adj-i) (1) difficult; hard; troublesome; complicated; serious (disease, problem, etc.); (2) fussy; particular; fastidious; hard to please; displeased; (3) gloomy; glum; sullen; serious (look); (4) (arch) dirty; unclean; filthy; detestable; (5) (arch) unpleasant; uncomfortable; creepy; spooky; (P) #2593
[ひとごと;たにんごと(他人事), hitogoto ; taningoto ( taningoto )] (n) other people's affairs; somebody else's problem #2596
[しょぶん, shobun] (n, vs) (1) disposal; dealing (with a problem); disposition; measure; procedure; (2) punishment; (3) putting down (e.g. diseased animal); (P) #2843
[へん, hen] (pref) (1) one (of a pair); (2) incomplete; imperfect; fragmentary; (3) few; little; (4) off-centre; remote; (5) (See 片が付く) side; problem; question; matters #4075
[かだい, kadai] (n) (1) subject; theme; issue; matter; (2) homework; assignment; (3) task; challenge; problem; question; (P) #4188
[だい, dai] (n) (1) title; subject; theme; topic; (2) problem (on a test); question; (n-suf, ctr) (3) counter for questions (on a test); (P) #4660
[なやみ, nayami] (n) trouble; troubles; worry; distress; sorrows; anguish; agony; problem; (P) #7963