■ busy 忙しい、多忙な
ex) She's busy preparing for her test.
彼女は テストの準備で忙しい

busy: actively doing something
ex) I will be busy cleaning the house.
自宅の掃除で忙しくなります

■ busy as a bee とても忙しい
ex) My sister is always as busy as a bee.
私の姉は いつも忙しい

busy as a bee: very busy and active
ex) He has been as busy as a bee ever since he started his new job.
彼は 自分の仕事を始めて以来、ずっと多忙である

■ put in a busy work day　　　　仕事で忙しい一日を過ごす
ex) It's not the hours you put in your work that counts.
重要なのは、仕事にどのくらいの時間を費やしたかではない

put in: to spend (time) especially at some occupation or job
ex) I put in a hard day at work at the office.
私は 会社で忙しく働いた

■ work against the clock （時間に追われて）忙しい
ex) We're working against the clock.
時間に追われながら 忙しく働いている

■ race against the clock 時間との戦いだ
ex) We are racing against the clock.
多忙で時間と戦っている

against the clock: In a great hurry, as fast as possible
ex) It was a race against time to put out fire.
消火作業は 時間との戦いだった

■ have a lot on one's plate　　やることがたくさんある
ex) I have a lot on my plate these days.
最近、やることがたくさんあり 忙しい

have a lot to one's plate: being overwhelmed from having so many things to handle at the same time
ex) She has a lot on her plate - especially with two new projects starting this week.
２つの新規プロジェクトが 今週始まることもあり、彼女ややることがいっぱいで 超多忙だ

■ have one's hands full　　　　忙しい
ex) I have my hands full for the next few days.
２、３日、忙しい日が続く

have one's hands full: have as much work as one can do
ex) I have my hands full with the kids at the moment.
子供の世話で 今は忙しい

■ bustle 多忙に動く、（人を）急がせる
ex) She bustled around the kitchen getting ready for dinner guests.
来客用の夕食づくりで、彼女はせわしなく台所を動き回った

bustle: to have a lot of busy activity
ex) The pier is always bustling with people.
その桟橋は いつも人がいっぱいで賑わっている

■ hectic （仕事などが）忙しい
ex) What a hectic day! / This week has been so hectic.
なんて忙しい日だろう！ / 今週はとても忙しかった

hectic: very busy and filled with activity
ex) My days feel more hectic than calm.
日々 落ち着いているというよりは 慌ただしい

■ be jammed up 忙しい
ex) I've been super jammed up at work lately.
最近仕事ですごく忙しい

■ be jam-packed （スケジュールなどが）いっぱいだ
ex) July was jam-packed more than usual.
７月は普段より ハードスケジュールだった

jam: to press or push (an object) into a tight place
ex) Do you find yourself working overtime to get your work done on days jam-packed with meetings?
スケジュールいっぱいに会議を入れた日には 日常業務をこなすために 残業を重ねてはいませんか？

■ on the move （移動や体を動かすことで）忙しい
ex) I've been on the move all day and I'm really tired.
一日中 外出で忙しくて、とても疲れている

on the move: to be physically active
ex) He's a busy child who is always on the move and never sits still.
彼は忙しい子供で、じっと座っていることができない