indecent > uncomely; repulsive

6 Distempered through misrule and passions base:

Distempered > [When] disordered

7 It grows a monster, and incontinent

grows > becomes incontinent > lacking self-restraint (adj.); immediately (adv.)

8 Does loose its dignity and native grace.

loose > lose; loose; loosen, dissolve native > innate, natural

9 Behold, who list, both one and other in this place.

list > chooses, please other > [the other]

209.2