interjection
Casual greeting, often used by men. Can sound old-fashioned or theatrical.
やあやあ、久しぶりだね。
Hey, long time no see.
interjection
Used to get someone's attention, similar to 'hey!' or 'listen!'.
やあやあ、ちょっと待ってよ。
Hey, wait a minute.
interjection
Used in kendo as a spirited shout to encourage or challenge.
剣道の試合で「やあやあ！」と声を出す。
In a kendo match, they shout 'Come on!'
A shorter, more common casual greeting. やあやあ is more emphatic or old-fashioned.
Standard polite greeting. やあやあ is very casual and often male speech.
Reduplication of the interjection やあ, likely imitative in origin.