In Malayalam, you call a younger brother "Chettan."
aniyan..!
Younger brother
R
Aniyan
brother= sahodaran( not commonly used in spoken malayalam) Elder brother = chettan younger brother = aniyan
In Malayalam, we call a younger sister "เดเตเดเตเดเดฟ" (chechi) or "เด เดจเตเด" (anuja).
meaning of the Malayalam word anujan is -- " YOUNGER BROTHER "
You would call your husband's younger brother a brother-in-law.
Both Anna and chettan are used for older brother. Younger brother is aniyan.
Annan
sister = sahodari older sister = chechi younger sister = anujathi
chetan.
sahodharan
" Ikka "
You can call your elder brother as 'ANNA' and your younger brother as 'THAMBI'
In Malayalam 'chettan' means elder brother and 'aniyan' means younger brother