Re: PIE u in Arm.

V = unrounded O



This incl. data from:

Ps   Pashto

Pamir
pa   Parachi
or    Ormuri
sh   Shughni
r     Ros^ani: \ Rushani
xf   Khufi:

Dardic
Bs    Bhat.eri / Bhat.é-sa zí:b
D     Degano
A     AtsHareetaá
si     Shina
Kh   Khowàr
Km  Kashmiri

Nuristani
Kv    kAmvíri
Kt    kAtá vari
Sa   san^u-vi:ri
Ni    nis^ei-alA



Ps had 2 stages. 


1 umlaut of u > ü > ë

plús.i- (f) S; *frús.i > -a: > wrëz.a (f) Ps;


2 dia. u > i (as you said)


Dardic had 2 stages.

1 u > ü then ü > ü / u / i (seemingly opt.)


2 umlaut of u > ü > ü / ë / V / i (depending on dia./l.)


I don't think the above are related (dif. changes/order).


Ev.:


recent (umlaut):


raopi- = jackal/fox?
urupi- (m) = dog Av; >> *würüfi > wVfV´r (m) = fox si;


kuma:rá-s = youth/boy/son V S;

*kuma:r.á: (f) > *kumar.á.: >
kumòru = girl Kh;

*kuma:r.í: > *kumar.í.: >
kimèri = woman Kh;


old (seemingly opt.):


putrá- V S; >> putr A; pütr Kv;


mukhá-m = mouth / face RV S; >> mòx  = face Kh; mux A; mük Kv;


thou E; tu: L; tù Kh; tü Kv;


two E; dváu S; j^ù Kh; dü Kv;


pulmund.ùk Kh; prüs^púlik Kv; = butterfly


pHokHr (adj) pHokHu- = small Ar; >> pHukró = a little bit, [der.] pHùk = few Kh; pHit.ó = small / little, [der.] pHík = few Bs;


incl. after C, > uC in:


mr,gá-s = game / stag/gazelle / large bird RV S;
mërëGa- Av; morG = bird P;
múgur = billy goat Bs; mürü´s. = ibex Kv; mùru = f. ibex Kh;


*kYr,Ngo-s >
çr,´Nga- S; surùng \ srùng Kh; *sYr.iNg > *sr.iN > s.ing Kv;
horn


drùng = long/tall Kh;  d.V´No = high si;


pr,´da:ku- (m) RV, pr,dakú:- (f) AV, pr,da:khu- = leopard/tiger/snake S;
*pr,d-m,-kHu+ > *purd-úm-Xu+ > *purd-úm-hu+ > purdúm  = leopard Kh; >> phúrdum = adder/snake Burusho;
*purd-úm-Xu+ > *pud-rúN-Xu+ > *pdrúN-Xu+ > *ptrun.s.u ? > trunzu Km;


This expl. why sh. r, > ur / ir ( > eX / etc.).


Also, ü caused umlaut in:


aru- (m) = sun S; >> yór = sun Kh;

*
aru
arü
örü
wYarü
wYar
yar


which also shows ö > wYa  > ya (most a > O > o)


If u- > ü- then ü- > wYü- > wYÜ- > we- before fric.:


Iranian *uzayana+ > wezén 'last night' Kh


Skt is.u- > *üs.u > wes.ù 'arrow' Kh



Also, this umlaut in an intermediate stage is shown by:


nine E; novem L; náva V S; nyòf Kh; no D; no Sa; nu Ni; nu Kv; Kt;


ten E; decem L; dáça V S; j^os^ Kh; dos Sa; dos^ Ni; duts Kv; Kt;


*
dekYm,
dekYum
dekYüm
dakYüm
dacYüm
döcYüm
döcYü
döcY


with *döcY > dos; dos^; duts ; in Nuristani


but again ö > wYa > in Kh;


*
döcY
dösY
dwYasY
dyasY
dyosY
dYyosY
jYyosY
jYyosY           no sY > s (assim. of fric. )
jYosY
j^os^




I said long ago it was poss. PIE ü < u in Skt.


Skt. borrowings in Nuristani showing ü < u are part of this, but this expl. opt. like:


ju:rn.á- RV \ ji:rn.á- AV = worn out / soft(ened) / old S; gra:num = a grain L;
géro:n = old man G;

for C,


and for:

cumbere; cuba:re = recline / lie down, cubitus = elbow L;
chúbuka- RV \ cubuka- \ cibuka- \ civuka- = chin S;
kúbos = hollow above hips on cattle G;


an intermediate stage with ü

*kubika > *kübika > *kibüka \ *kübüka > *kibuka \

expl. more simply the met/assim.


ti:rthá-m = passage/way/ford V S; *tu:rthá- > tu:ha- = shore/border Pk;
tHu:rt \ tHúht = ford Kh; >> türt Wk;


tongue E; 
juhú: \ jihvá: (f) RV, jihvá-s (m) S;


tHu:rt >> türt may show retention of ü in a borrowing.