忙しい
いそがしい (isogashii)
busy
i-adjective
Example
今週は仕事が忙しくて、友達に会えません。
こんしゅうはしごとがいそがしくて、ともだちにあえません。
Konshuu wa shigoto ga isogashikute, tomodachi ni aemasen.
This week I'm busy with work, so I can't meet my friends.
Very commonly used in daily conversation. The て-form 'isogashikute' is used to connect clauses.