Native speaker
In Emirati Arabic, “Quiet (person)” is هادي (haadee).
هادي
Quiet (person)
It's in the phrasebook under Yes, no & everyday basics, with 90 more like it.
gadeem
saheeh, sah
muz'ij
batee
jideed
imbalal
Source: DLIFLC Emirati Basic Language Survival Kit (2007). Credits and licences