swinþs

[← Prot-Germ *swinþaz, *swenþaz; OE swíð, swíþ (← *swinþ) “strong, vigorous, severe; powerful”; swíðe, swíþe adv “strongly, severely; very” (Mod E swith arch “strongly; very, extremely; quickly, instantly”); O Fris swīthe adv “very”; O Sax swīth, swīthi “strong”; swītho adv “very”; OHG *swind (in prop n-s); MHG swinde, swint “strong; quick, fast” (Mod G geschwind “quick, fast, swift”); O Icel svinnr, sviðr “wise, prudent” (Mod Icel svinnur) ← Indo-Europ *swéntos “active, healthy”; cf Pol dial szwytki “quick, agile”, Ukr швидкий “quick, fast” (a German borrowing)]

swinþis - Gen, sing, masc - Mrk. III, 27
swinþan - Acc, sing, masc - Mrk. III, 27
swinþai - Nom, pl, masc - Mrk. II, 17; Cor. I, IV, 10; Cor. II, XIII, 9
swinþos - Nom, pl, fem - Cor. II, X, 10
swinþoza - compar, Nom, sing, masc - Mrk. I, 7; Luk. III, 16; Skeirns. III, 10
swinþozans - compar, Nom, pl, masc - Cor. I, X, 22

2.1. (a)

strong declension of adjectives -a- (-o-)* stem blinds (blind)
singular number
	masculine gender	neuter gender	feminine gender
nominative	blinds	blind, blindata	blinda
genitive	blindis	blindis	blindaizōs
dative	blindamma	blindamma	blindai
accusative	blindana	blind, blindata	blinda
plural number
	masculine gender	neuter gender	feminine gender
nominative	blindai	blinda	blindōs
genitive	blindaizē	blindaizē	blindaizō
dative	blindaim	blindaim	blindaim
accusative	blindans	blinda	blindōs

* By the -o- stem versions we mean fem forms of the same type of adjectives.