And Amnon was so vexed, that he fell sick
for his sister Tamar; for she [was] a virgin; and Amnon thought it hard for
him to do any thing to her.
BSB
Amnon was sick with frustration over his sister Tamar, for she was a virgin, and it seemed implausible for him to do anything to her.
WEB
Amnon was so troubled that he fell sick because of his sister Tamar; for she was a virgin; and it seemed hard to Amnon to do anything to her.
YLT
And Amnon hath distress—even to become sick, because of Tamar his sister, for she is a virgin, and it is hard in the eyes of Amnon to do anything to her.