don't worry; no need to worry
A casual, reassuring phrase used to tell someone not to worry. Often used when comforting someone or dismissing concerns.
Don't worry. I'm sure it'll be fine.
You don't need to worry about the money. I'll pay.
Standard kanji-kana mixed spelling.
Variant with いらない in kana; slightly more casual or easier to read.
Phrase composed of 心配 (worry) + 要らない (not needed). The kanji 要 is sometimes replaced with kana いらない for simplicity.