3 He thought have slain her in his fierce despite:

have > [to have] despite > indignation, rage

4 But hasty heat tempering with sufferance wise,

sufferance > tolerance

5 He stayed his hand, and gan himself advise

gan > did

6 To prove his sense, and tempt her feigned truth.

tempt > test

7 Wringing her hands in women's piteous wise,

wise > manner