Denshi Jisho — Online Japanese dictionary

祖母 そぼ grandmother
Common word, Noun, No-adjective 
祖母 うば grandmother
Noun, No-adjective 
祖母 おば grandmother
Noun, No-adjective 
祖母 ばば grandmother
Noun, No-adjective 
祖母 おおば grandmother
Noun, No-adjective 
祖母さん ばあさん 1: grandmother;
2: female senior citizen
Noun 

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