胃がむかむかする。

Sentence Analyzer

むかむかする

English Translation

I'm afraid I have an upset stomach.

Furigana

()がむかむかする。

Romanji

I ga mukamukasuru.

Words

()
stomach; Chinese "stomach" constellation (one of the 28 mansions)
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
むかむか (むかむか)
feeling sick; feeling queasy; feeling nauseated; being angry; being offended; being disgusted

Kanji

Reading: 
Meanings: stomach, paunch, crop, craw