正午まで

until noon

→ 正午
phrase Uncommon #19,103
until noon With に, 正午までに means “by noon,” indicating a deadline. Without に, it generally means “until noon.”
JA: 正午まで仕事をします。
EN: I’ll work until noon.

正午まで待って下さい

Please wait until noon.

彼は正午まで来なかった

He didn't come until noon.

正午まで家にいなさい

Stay home until noon.

彼は正午までここにいるでしょう

He will be here until noon.

正午まで待とう

Let's wait until noon.