3 With goodly grace and comely personage,
goodly > attractive, beautiful personage > {The body and appearance as distinct from clothing}
4 That was on earth not easy to compeer;
compeer > equal, rival
5 Full of great love, but Cupid's wanton snare
Cupid > (God of love, the son of Jupiter and Venus)
6 As hell she hated, chaste in work and will; 7 Her neck and breasts were ever open bare, 8 That ay thereof her babes might suck their fill;
ay > ever, always
9 The rest was all in yellow robes arrayed still.
yellow > (The colour of fertility: see Met. 10.1) still > ever, always