How to say "eighty" in Arabic
CognateMeaningeighty
Arabic · Modern Standard Arabic
ثَمَانُون
thamānūnת'מאנון
ثمانون
Hebrew · Modern Hebrew
שמונים
shmonimشْمُونِيم
How the two words are related
Cognate
Same Semitic root, same meaning — you already know this word.
Arabic root
ث-م-نHebrew root
ש-מ-נשמונים and thamānūn keep the ש-מ-נ/ث-م-ن skeleton of 'eight' intact under the shared plural ending.
Learn it
On the street
How people actually say it in the spoken dialects, where it differs from the standard word.
Levantine · Palestine, Jordan, Lebanon, Syria
تَمَانِين
tamānīnתמאניןEveryday form, with the usual dialectal t for ث: tamānīn.
Egyptian · Cairo and the Nile Delta
تَمَانِين
tamanīnתמניןMoroccan · Morocco — Casablanca, Rabat, Fes
تْمَانِين
tmānīnתמאניןIn a phrase
ثَمَانُون سَنَة
thamānūn sanaת'מאנון סנהeighty years