used to express mild protest, entreaty, or sympathy

aw, come on, Andy

aww, you poor thing

used to express mild disappointment or self-deprecation

aw, it's a shame I can't make it

aww, thanks for the nice comments

used to express pleasure, delight, or affection, especially in response to something regarded as sweet or endearing

aww, the kitten is too cute!

aww, are you guys an item?