空腹

くうふく

empty stomach, hunger

JLPT N1

Details

Part of Speech:: Noun, Na-adjective , Noun which may take the genitive case particle 'no'
Romaji:: kuufuku

お腹が空腹で、朝食を食べるのを忘れた

I forgot to eat breakfast because my stomach is empty.

空腹で、頭が働かない

I'm not thinking clearly because I'm hungry.