Probably from an unused root meaning to disintegrate; stupidity (as a result of grossness or of degeneracy) -- extremity.

hap·par·šə·ḏō·nāh — 1 Occ.
pā·rā·šaṯ — 1 Occ.
ū·p̄ā·rā·šaṯ — 1 Occ.
par·šêz — 1 Occ.
par·šan·dā·ṯā — 1 Occ.
bip̄·rāṯ — 1 Occ.
p̄ə·rāṯ — 1 Occ.
pə·rāṯ — 14 Occ.
pə·rā·ṯāh — 3 Occ.
hap·par·tə·mîm — 3 Occ.
p̄ā·śāh — 8 Occ.
p̄ā·śā·ṯāh — 1 Occ.
p̄ā·śə·ṯāh — 1 Occ.
pā·śāh — 3 Occ.
pā·śə·ṯāh — 1 Occ.
pā·śōh — 4 Occ.
ṯip̄·śeh — 3 Occ.
yip̄·śeh — 1 Occ.
way·p̄aš·šə·ḥê·nî — 1 Occ.
p̄aš·ḥūr — 6 Occ.