Whom > [Of whom] wight > person, "man"
2 (All ignorant of her contrary sex:
contrary > different; opposite; untoward, prejudicial
3 For she her weened a fresh and lusty knight),
weened > supposed, imagined [to be]
4 She greatly began enamoured to wax,
wax > grow
5 And with vain thoughts her falsed fancy vex:
falsed > corrupted; failing (cf. 102.30:3) vex > [to vex]
6 Her fickle heart conceived hasty fire, 7 Like sparks of fire which fall in slender flax,