How to say "fasting" in Arabic

Cognate

Meaningfasting

Arabic · Modern Standard Arabic

صَوْم

ṣawmצום

صوم

Hebrew · Modern Hebrew

צום

tsomتْسُوم

How the two words are related

Cognate

Same Semitic root, same meaning — you already know this word.

Arabic root

ص-و-م

Hebrew root

צ-ו-ם

צום and ṣawm are the same word (צ↔ص) for the same ritual: the fast of Ramadan and the fast of Yom Kippur share one Semitic root.

How people actually say it in the spoken dialects, where it differs from the standard word.

Egyptian · Cairo and the Nile Delta

صُوم

ṣōmצום

The aw flattens to ō: ṣōm.

صَوْم رَمَضَان

ṣawm ramaḍānצום רמצ'אן

the Ramadan fast