How to say "hair" in Arabic
CognateMeaninghair
Arabic · Modern Standard Arabic
شَعْر
shaʿrשער
شعر
Hebrew · Modern Hebrew
שיער
se'arسِئَار
How the two words are related
Cognate
Same Semitic root, same meaning — you already know this word.
Arabic root
ش-ع-رHebrew root
ש-ע-רHebrew שיער has the sin that regularly matches Arabic ش, as in עשר/ʿashara. Bonus cousin: שעורה 'barley' ↔ Arabic shaʿīr — the bearded, 'hairy' grain.
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In a phrase
شَعْرُهَا أَسْوَد
shaʿruhā aswadשערהא אסודHer hair is black.