忙しい

いそがしい

busy (people, days)

i-adjective

Conjugation Table

Present

忙しい

Negative

忙しくない

Past

忙しかった

Past Negative

忙しくなかった

Te Form

忙しくて

Adverbial

忙しく

Conditional

忙しければ

Presumptive

忙しいでしょう

Example Sentences

今日は忙しいから、映画に行けない。

I am busy today, so I can't go to the movies.

Kyō wa isogashii kara, eiga ni ikenai.

昨日忙しかったけど、楽しかったよ。

I was busy yesterday, but it was fun.

Kinō isogashikatta kedo, tanoshikatta yo.

明日は忙しくないから、一緒に遊ぼう。

I won't be busy tomorrow, so let's hang out.

Ashita wa isogashikunai kara, issho ni asobō.

Grammar Notes & Usage Tips

•Conjugation Cues:** As an i-adjective, 忙しい (いそがしい) follows regular i-adjective rules. For example, to say "was busy," change it to 忙しかった (いそがしかった), and for "is not busy," it's 忙しくない (いそがしくない).

•Particle Pairing:** When talking about being busy with something, use the particle で (de) to indicate the reason or cause. For instance, "I'm busy with work" translates to 仕事で忙しい (しごとでいそがしい).

•Sentence Placement:** Remember, adjectives like 忙しい (いそがしい) come before the noun they describe, such as 忙しい日 (いそがしいひ) meaning "a busy day."

•Politeness Practice:** To be polite, use the form 忙しいです (いそがしいです). This is a straightforward way to say "I am busy" in a formal setting or conversation.

•い-adjective: Conjugates by changing the い ending