You to him : tsun tsun -babe -blubbery -cutie - to-chan

Him to you : babe - mine- love - cute

You to him : Oikiwi -baby - fluff -tooru (you call him with his first name only when you're in a good mood)

Him to you : princess -babyy-love -sexy (when you're alone)

Iwaizumi :

You to him : Zumi -hottie -iwa-chan(to tease him) -hajime (his first name is sexy so one time you called him that to see his reaction but the thing is you couldn't walk the next day)

Him to you : beautiful -mine -baby -hot stuff.

Kuroo:

You to him: baby -dork -hottie-captin(it turns him on so you call him that only when you ....)-tetsu (he loves when you call him that and the first time you did that didn't end up well like iwaizumi)

Him to you : chibi-chan(😏)-kittie -babe -baby girl -sexy -mine -love

Kenma :

Mostly your normal names but sometimes you call him ken-ken and he call you babe.

Atsumu:

You to him :baby-sangwoo(jk😂)

-atsu.

Him to you :baby -darling -honny .

You to him:baby -strawberry -cutie

Him to you :love - mine -honny.

Osamu :

You to him:samu -hotties -cutie -baby

Him to you :babe -love -pretty

Terushima :

You to him : teru-chan -babe -hot stuff

Yuuji (when you called him that the first time it didn't end up well part 3)

Him to you : babe -baby girl -mine - cutie -hot stuff