Sister Princess Dictionary 
Ani Common Japanese term for big brother. Used by Mamoru
Ani-chamaAbnormal term meaning big brother. -chama is a honorific not commonly used, probably a combination of -chan and -sama. Used By Yotsuba.
Anigimi-samaAbnormal Japanese term for brother, probably very archaic. Used By Haruka.
AnikiNormal Japanese term for big brother. Rustic term. Used by Rinrin.
Anuie-samaJapanese term for brother. Proper form. Used by Marie.
Ani-kunAbnormal Japense term for brother. This term is a bit of a contridiction as Ani means older brother and -kun is used for people younger than you. Used by Chikage.
Brother a male sibling see oni-chan, oni-sama, oni-chama, oni-tama, ani, anigimi-sama, anuie-sama, ani-kun, ani-chama, aniki, nisama, niya
Checky che ke' definitions 1:verb, to check 2: adjective, interesting, worthy of checking wedding dress is checky 3: excalmation, I am checking. Used by Yotsuba.
Ni-samaJapanese term for brother. Probably a shortened form of Oni-sama. Used by Shirayuki.
Ni-ya. Probably a Japanese term for brother. Used by Aria.
Oni-chamaAbnormal term meaning big brother. -chama is a honorific not commonly used, probably a combination of -chan and -sama. Used By Kahon.
Oni-chan Normal Japanese term for brother. -Chan is used to conote familiarity. Usually used for young girls and cute things. used by Karen.
Oni-samaAbnormal Japanese term for brother. -Sama is used to conote deference. Normally used for people like royalty for god but in anime most often used to express romantic obsession. Used by Sakuya.
