feþer

Part of speech: noun
Gender: feminine
Stem: -ō-
1. feather; swanes feðre swan's feathers; 2. pl (feðre) rar wings; 3. pen, quill (also feðer)
Etymology
[Mod E FETHERProt-Germ *feþrō; O Fris fethere; O Sax fethara; Dt veer; OHG fedara, federa (Mod G Feder); O Icel fjǫðr (Mod Icel fjöður) ← Indo-Europ *petr-, *pet-; Sanskr pátram “wing; feather”; pátati “to fly”; Avest pata- “to fly”; Anc Gr πτερόν “wing; feather”; πετομαι “to fly”; Lat penna “feather; wing”; O Ir én “bird”]
Paradigm

1.1.2. (a)

(a) short-stemmed version: car-

nouns, -ō- stem, feminine gender
caru
(care)
singular plural
nominative caru cara, care
genitive care cara, carena
dative (instrumental) care carum
accusative care cara, care

The ending -ena in Gen pl is determined by the analogy with the weak declension

(b) long-stemmed version: heord-

nouns, -ō- stem, feminine gender
heord
(ჯოგი; ფარა)
singular plural
nominative heord heorda, heorde
genitive heorde heorda, heordena
dative (instrumental) heorde heordum
accusative heorde heorda, heorde