うっとうしい(鬱陶しい)
gloomy, dreary; annoying, troublesome
→ During the seasonal rains, dreary, gloomy days are overwhelmingly frequent.
切ない
heart-wrenching, painful, poignant, bittersweet
→ Listening to parting melodies evokes a deeply poignant and heart-wrenching sorrow.
やるせない(遣る瀬ない)
helpless, forlorn, desolate, inconsolable
→ I feel thoroughly helpless and forlorn at my own complete inability to do a thing.
しゃくに障る
to get on one's nerves, to grate on, to exasperate
→ His ceaseless boasting and bragging really gets on my nerves.
へこむ(凹む)
to feel depressed, to be crestfallen; to get dented
→ With poor exam results, I felt considerably crushed and depressed.
くよくよする
to worry needlessly, to brood over, to fret
→ Brooding constantly over past failures will achieve absolutely nothing.
心苦しい
painful at heart, feeling guilty, apologetic
→ I feel truly apologetic and pained to take up your precious time amid your busy schedule.
むなしい(虚しい)
empty, vain, hollow, futile
→ Dining entirely alone makes me overwhelmed by a deep sense of hollowness.
憂うつな
depressed, melancholy, gloomy, dejected
→ On Mondays, simply contemplating the work ahead makes me feel utterly depressed.
惨めな
miserable, wretched, pitiful
→ Suffering a crushing defeat in the match, I fell into a truly wretched frame of mind.
根に持つ
to harbor a grudge, to hold against
→ Even though it was a harmless joke, that person is persistently harboring a grudge.
ねたむ(妬む)
to envy, to be jealous of
→ Even if you jealously envy those who succeed, nothing will ever improve.
劣等感
inferiority complex
→ There are not a few people who suffer from an inferiority complex regarding their education.
孤独な
lonely, solitary, isolated
→ Since starting to live all alone, I have come to experience loneliness much more frequently.
屈折する
to warp, to become distorted; to refract
→ Due to the trauma of being bullied, his personality became bitterly warped and distorted.
気が向かない
not feeling up to it, disinclined, reluctant
→ When you don't feel up to it, there is no need to force yourself to go out.
未熟な
immature, inexperienced, green, unskilled
→ With such immature skills, this crucial job cannot be entrusted to you.
びくびくする
timidly, nervously, trembling in fear
→ After the earthquake, I have been living in constant fear and trembling of aftershocks.
おどおどする
hesitantly, timidly, nervously cowering
→ In my very first job interview, I ended up acting completely nervous and timid.
もやもやする
feeling hazy, uneasy, pent-up frustration
→ There is something I yearn to say, but being unable to voice it leaves me deeply frustrated.