-O-

o 3O, OS
o Hedhil OS
odhril ONO
odhron ONO
odog OT/OTOS/OTOK
oear AYAR/AIR
oeg AYAK
oegas AYAK
Oeges engrin AYAK
oeglir AYAK, LIR²
oeil > eil ULU
oel pl. oelin AY
Oelinuial AY
oer AYAR/AIR
Oeros GOS/GOTH
oeruil UY
ofr, ovr > ovor UB
ôl LOS
ôl pl. elei ÓLOS
old > oll ULU
Olfannor ÓLOS, SPAN
oll < old ULU
oltha LOS; oltha- ÓLOS
or ORO
or- (prefix) ORO
orch pl. yrch ÓROK
orchal (so according to WJ:305, not "orchel") KHAL²
orchall ORO
orchel (misreading for orchal, see WJ:305) ORO, KHAL²
Orchrist RIS
orn pl. yrn ÓR-NI
orod pl. ereid, ered ÓROT
Orodreth ÓROT
orodrim ÓROT
oronte, archaic pa.t. of erio ORO
ortheli TEL/TELU
orthelian TEL/TELU
ortheri, 3 sg. orthor TUR
ortho, pa.t. orthant ORO
orthor, 3. sg. of ortheri TUR
os- (prefix) OS
osgar, 3. sg. of esgeri OS
osp USUK
ost OS (LOD)
ostrad RAT
othlon < othlond LOD
othlond > othlon LOD
othrond (ROD)
othrond [< ost-rond] OS
ovor < ofr, ovr UB
ovras UB
ovro UB