How to say "to open" in Arabic
CognateMeaningto open
Arabic · Modern Standard Arabic
فَتَحَ
fataḥaפתח
فتح
Hebrew · Modern Hebrew
פתח
patakhپَاتَاخ
How the two words are related
Cognate
Same Semitic root, same meaning — you already know this word.
Arabic root
ف-ت-حHebrew root
פ-ת-חfataḥa = פתח, letter for letter, and miftāḥ (key) is exactly מפתח. Even the vowel names match: Arabic fatḥa and Hebrew patach are both the 'opening' vowel.
Learn it
On the street
How people actually say it in the spoken dialects, where it differs from the standard word.
Moroccan · Morocco — Casablanca, Rabat, Fes
حلّ
ḥellחלDarija's 'to open' is ḥell (literally 'untie'): ḥell l-bāb — 'open the door'.
In a phrase
فَتَحَ الْبَاب
fataḥa al-bābפתח אל-באבHe opened the door