Buabeibubain
Buada (Tanchangya) [ Roman: Bua-Da]
1. (Common Noun-Masculine) father of ones father or mother.
মাক বা দেউতাকৰ দেউতাক।
English: granddaddy, grandfather, grandpa,
Assamese: আতা, আৰ্য্যক, ককা, ককাদেউতা, দ’তি, পিতামহ, পুথাও, মাতামহ,
Bodo: आबौआ,
Mising: ato, t:t,
Garo: Aatsu,
Meeteilon: eepu, epu,
Karbi: phu,
Monpa: atta, meme,
Nagamese: ata, babalaga baba,
Dimasa: nuju (your grand father), Aju, buju,
Tai: pu-chow, খিং, পূ,
Bangla: দাদু,
Nepali: बाजे, हजुरबुबा,
Rabha: জুজু,
Tiwa: ajo,
Deori: আজাই, দিং,
Tanchangya: Buada,

Related Ideas:

a. Common Noun-Feminine: grandma, grandmother, granny, আইতা, আইবে
b. Common Noun-Masculine: পুথাদেউ