一気に
in one go; all at once
→ He ran up the stairs to the top in one go.
きっぱり（と）
firmly; decisively; flatly
→ Thinking that an ambiguous attitude was not good, I firmly refused his invitation.
てきぱき（と）
efficiently; briskly
→ She handles the housework efficiently and also puts a lot of effort into her job.
だらだら（と）する
①laze around; drag on ②slope gently ③flow continuously
→ On hot days, I don't feel like doing anything and tend to spend the day lazing around at home.
ぐずぐず（と）する
①dawdle; hesitate ②grumble ③have a stuffy/runny nose
→ I dawdled in bed in the morning and almost ended up being late.
ゆうゆう（と）
①leisurely; calmly ②with plenty to spare; easily
→ Watching birds fly leisurely across the vast sky makes me feel calm.
いそいそ（と）
cheerfully; eagerly
→ Apparently she had a date, and she eagerly started getting ready from early morning.
とっさに
instantly; instinctively
→ When the ball came flying toward me, I instinctively put out my hand to protect my face.
じっくり（と）
carefully; thoroughly; taking one's time
→ Rather than rushing to a conclusion, we need to think carefully about this issue.
おろおろ（と）する
panic; be flustered
→ My child developed a high fever, and I panicked because I didn't know what to do.
まごまごする
be confused; fumble; hesitate
→ Because I didn't know how to operate the new machine, I fumbled around and it took a long time.
ぶつぶつ（と）
①mutter ②grumble ③bumps; pimples
→ He was pacing back and forth in the room while muttering something.
うっとり（と）する
be enchanted; be captivated
→ Everyone in the hall was enchanted by her beautiful singing voice and listened intently.
ゆったり（と）する
①relaxed; leisurely ②loose-fitting; roomy
→ On my days off, I want to relax at home and recover from my daily fatigue.
しみじみ（と）
deeply; keenly; reflectively
→ After starting to live alone, I deeply realized how precious my family is.
つくづく（と）
①carefully; thoroughly ②deeply; keenly
→ I looked carefully at my face in the mirror and felt that I had really grown older.
がっくり（と）する
①be dejected; be deeply disappointed ②drop sharply
→ When he was told that he had failed the exam, his shoulders slumped in disappointment.
うんざりする
be fed up; be sick of
→ Doing the same monotonous work every day has completely worn me out.
てっきり
be sure; assume wrongly
→ I was sure today was Sunday, but it was still Saturday.
いっそ
rather; might as well
→ If I have to continue such painful treatment, I find myself thinking I'd rather be free of the suffering.
きっかり（と）
①exactly; precisely ②exactly; evenly
→ The meeting started at exactly 2 p.m.
きっちり（と）
①precisely; properly; carefully ②exactly; perfectly
→ She is extremely meticulous about her work and never overlooks even small mistakes.
誠に
truly; sincerely; indeed
→ Thank you very much for coming today despite your busy schedule.
ことに
particularly; especially
→ This winter, unusually, it has snowed particularly often.
まさに
①truly; exactly ②right now; just
→ He is exactly the right person to lead this project.
ひたすら
single-mindedly; earnestly
→ Believing that he would return, she kept waiting for him single-mindedly.
あくまで（も）
①to the very end; persistently ②after all; strictly speaking ③extremely; thoroughly
→ He continued to insist on his innocence to the very end.
めっきり
noticeably; remarkably
→ Mornings and evenings have become noticeably cooler, and I can feel autumn approaching.
かろうじて
barely; narrowly
→ I barely managed to catch the last train.
あえて
①dare to; deliberately ②need not necessarily
→ While everyone else opposed it, he dared to state his own opinion.
あわや
nearly; almost
→ Unable to make the turn, I almost collided with an oncoming car.
もろに
directly; full-on
→ The flying ball hit me squarely in the face.
いやに
strangely; unusually
→ He's unusually quiet today. I wonder what's wrong.
やけに
extremely; unusually
→ I thought it was unusually hot today, and apparently the temperature is as high as 35 degrees.
むやみに
①recklessly; indiscriminately ②excessively
→ You should not blindly trust people you do not know well.
やたらに
①excessively ②randomly; indiscriminately ③recklessly
→ Maybe because I exercised today, I'm extremely thirsty.
何しろ
after all; anyway; you see
→ I've been feeling tired lately. After all, work is just too busy.
専ら
mainly; mostly
→ On my days off, I mostly spend my time lazing around at home.
一応
①for now; just in case ②more or less; roughly
→ I don't have time to look at it in detail, but I'll at least glance through it.
一旦
①temporarily; once ②once; once you have
→ Because I was tired, I took a temporary break under a tree and then started walking again.
ひとまず
for now; for the time being
→ The cause is still unknown, but for now let's at least provide first aid.
追って
later; subsequently
→ We will contact you later regarding the date, time, and location of the meeting.
現に
actually; in fact
→ I knew he was inattentive, and in fact he made another silly mistake today.
言わば
so to speak; as it were
→ For me, she is, so to speak, like the sun.
いかに
①how ②how much; to what extent ③however
→ The issue is how to carry out the work efficiently within the limited time.
一律に
uniformly; across the board
→ The hourly wage for part-time workers was uniformly raised to 1,000 yen regardless of experience.
各々
each; each one
→ For lunch, everyone was to order what they liked, so each person chose from the menu.
もはや
already; no longer
→ By the time he arrived at the venue, the opening ceremony had already ended.
ともすれば/ともすると
tend to; be apt to
→ People tend to drift toward the easier path rather than the difficult one.
依然（として）
still; as before
→ The system error of unknown cause still has not been resolved.
漠然と
vaguely; indistinctly
→ Quite a few young people have vague anxieties about the future.
まして
much less; let alone
→ Even adults cannot solve this problem, so it would be impossible for children, let alone.
なおさら
all the more; even more
→ He is already excellent, and since he never neglects his efforts, no one can compete with him all the more.
ひいては
by extension; ultimately; furthermore
→ Each person's concern for the environment helps protect the local community and, by extension, the future of the entire planet.
おのずから
naturally; of itself
→ If you keep making an effort, the way will naturally open up.
明くる
the following; next
→ The day after the incident occurred, newspapers reported the news on their front pages.
来る＋年月日
this coming...; forthcoming
→ On the coming October 10, a ceremony commemorating the 50th anniversary of the city's establishment will be held.
去る＋年月日
last; this past...
→ On March 15 of this past year, a major earthquake occurred in this area.
例の
that; the one we talked about
→ Please tell me what happened with that matter we were talking about yesterday.
ありとあらゆる
every possible; all conceivable
→ He tried every possible means to solve the problem.
